Download or read book Quantitative Analysis of Flow Through Permeable Media in Microfluidic Devices written by Jindi Sun and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiphase flow through permeable media is sophisticated in nature because phases interact at pore scale and compete for permeability. This complexity and non-linearity make predictive mathematical descriptions a challenging task. Remediation of aquifer NAPL (non-aqueous-phase liquid) contamination is an example of an application where predictive models are highly desirable. This dissertation presents an experimental program that uses a microfluidic experiment at form, a high-resolution camera, and a microscope-mountable high-speed camera to examine i) the flow behavior of remediation of aquifer contamination using CO2 foams that are stabilized with nanoparticles, ii) transient flow states in single-phase flow, and iii) occurrence of Haines Jump in two-phase flow using an evolution graph produced through interface tracking. Contamination caused by NAPL in aquifers and soil presents a big challenge and affective remediation techniques are desired. This work considers CO2 foams for remediation of NAPL contaminated porous media. However, CO2-surfactant foam is not stable enough for efficient removal of NAPL contamination. This shortcoming may be alleviated via the NP-surfactant mixture as a stabilizing agent. The first part of work focuses on the use of fly ash NPs and a mixture of AOS and LAPB surfactants to generate stable foams. This work presents results from an experimental program that was designed to establish optimum concentration of the foam’s constituents. Results indicate that fly ash, which is a by-product of coal-burning power plants, is a suitable material to generate robust CO2 foams. Moreover, the results suggest for 1000 ppm AOS-LAPB surfactant solution, 1000 ppm fly ash NPs is the best choice. What’s more, foam generated in channels is discontinuous and the solid sediment in NAPL can weaken the mobility and performance of foam. The flow system is too complex to study the mechanics behind the multi-phase flow. Hence, simplified microfluidic devices and advanced techniques are applied in the second and third part of the dissertation. The classic multiphase extension for Darcy's law models this complexity through two practices: per-phase application of Darcy's law with relative permeability and instantaneous resolution of fluid dynamics at pore scale. Experimental evidence against the latter practice is provided in the second part in the dissertation for single-phase experiments. The third part of the dissertation targets the former assumption by examining Haines Jump, a type of rapid pore-filling event in multiphase flow through permeable media better known as Haines Jump. Segmentation and tracking techniques are applied to extract and track displacement fronts as they evolve through high-speed video recording. The resulting evolution graph facilitate topology-cognitive computation on the transport network. These experiments conclusively identify Haines Jump in microfluidic devices and qualitatively analyze their significance to Darcy's law in the macroscopic scheme of bulk flow rates.

Download or read book The Study of Fluids Flow through Porous Media Using Microfluidic Devices written by Feng Guo and published by . This book was released on 2019 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this research is implementing glass-fabricated microfluidic devices to study problems involving fluid flow through porous media problems, including; foam flooding in enhanced oil recovery (EOR), immiscible displacement instability, and CO2 sequestration in a deep saline aquifer. The relatively low viscosity and density of CO2 causes severe fingering, gravity override and high mobility through high permeability layers or fractures, which leads to low sweep efficiency in porous media. CO2 foam flooding stabilized by nanoparticles (NPs) is able to significantly increase CO2 injectant apparent viscosity thereby reducing its mobility and increasing the volumetric sweep efficiency in EOR and sequestration. A deep understanding of flow behaviors and displacement instabilities of CO2 (foam and gas) in porous media enhances the ability to predict oil recovery and CO2 storage and inform reservoir engineering decisions. This dissertation provides details of experimental work performed in NP-stabilized CO2 foam flooding, immiscible displacements and CO2 sequestration using different fabricated microfluidic devices. Several novel NPs candidates are investigated and evaluated in terms of foam stability and oil recovery. The flow behavior of CO2 foam and the resulting incremental oil recovery are investigated in both homogeneous and heterogeneous porous media. Flow instabilities and phase diagrams with boundaries of three flow regimes of immiscible displacement are investigated. In addition, the CO2 gas/foam storage capacity and efficiency in a deep saline aquifer are studied. In order to study NP-stabilized CO2 foam flooding in porous media, a homogeneous microfluidic device is fabricated in which the pore network is based on a 2D representation of a sample of Berea sandstone. Foam properties of NPs stabilized CO2 foam using silica (Si), nanoclay, fly ash and iron oxide (IO) and the resulting improvement in oil recovery are investigated using a series of modified bulk foam tests and microfluidic experiments. Results show that the size and/or size distribution, shape, and surface charge of the particles are influential parameters governing the foam stability and formability which have a direct relationship with oil recovery performance. The displacement observation shows the silica and fly ash NPs assisted by surfactant mixture (Alpha-Olefin Sulfonate (AOS)-Lauramidopropyl Betaine (LAPB)) generated stable foams and resulted in high ultimate oil recoveries (over 90%). Even though IO-surfactant mixtures generate foams with relatively inferior stability characteristics and ultimate recovery, approximately three quarters of the IO NPs are recovered once exposed to a magnetic field. Recovered IO NPs have the potential to be reused in EOR process. The implement of by-product fly ash and recyclable IO NP provides potential advantage of NPs on a commercial scale in EOR processes. A heterogeneous microfluidic device is fabricated, which consisted of a centrally located low permeability zone and two high permeability zones on its sides, to study flow behaviors of CO2 foam and its impact on mobility control in displacing oil in a heterogeneous porous medium. The results show that foam is able to mobilize and recover oil trapped in the low permeability zone by increasing the resistance to flow in the high permeability zones and diverting the surfactant solution into the adjacent low-permeability zone. Foam remains gas-rich in the high permeability zones and solvent-rich in the low permeability zone throughout the experiments. The observed displacement dynamics are explained by characterizing channel geometries (trapezoid) and calculating capillary entry pressure values for various fluids and zones of the medium. Flow behaviors and instabilities in two phase immiscible displacements are addressed using a glass microfluidic device. A series of microfluidic device immiscible displacement experiments are conducted across a range of capillary numbers (Ca) of 1E-4 to 9E-8 and viscosity ratio (M) from 1E-4 to 13.6E3. The microfluidic device features a water-wet porous medium based on a two-dimensional representation of a Berea sandstone; the displacement processes are captured using a high-resolution camera that allows visualization of the entire domain, while being able to resolve features as small as 10 μm. The study reports a correlation between fractal dimension of displacement fronts and displacement front patterns in the porous medium. Three flow regimes with boundaries are mapped on a two-dimensional parameter space (log M and log Ca), and phase diagrams proposed in the literature are superimposed for comparison. Results suggest that the transition regime may occupy a much larger region of the flow regime diagram than is suggested in recent literature. This two-phase immiscible displacement study not only extended works of previous studies using an advanced glass microfluidic device but also it may also help understand macroscopic processes at the continuum scale and provide insights into designing engineered porous media such as exchange columns and membranes with respect to desired immiscible displacement behaviors. In order to study CO2 sequestration in an aquifer with multiple variables, namely, fluids’ interfacial tension, injection rate, viscosity and the characteristics of the porous medium, a custom microfluidic device is developed. The pore network is based on a mosaic of Scanning Electron Microscopy (SEM) images of a thin section of the Lower Cretaceous Washita-Fredericksburg, which is a saline aquifer-bearing formation in east-central Mississippi, USA. The study investigates the effects of those variables on CO2 gas and foam injection into the brine-saturated porous medium. The results suggest that higher injection rates and CO2 foam injection are able to improve CO2 saturation, and therefore storage, in the microfluidic device; ultimate CO2 saturation from foam injection are approximately 20%-40% higher compared to results from gas injection. Thus, CO2 foam injection is a promising approach to reduce CO2 mobility and optimize the CO2 storage capacity in saline aquifer formations. In addition, legislation of CO2 sequestration and potential advantages of using CO2 foam for geological CO2 sequestration in the aforementioned saline aquifer, which is currently under study for commercial-scale CO2 storage, are also discussed. This research study shows advantages of using glass fabricated microfluidic devices with complex configurations to study several flow-through porous media problems. It enables visualization of fluids distributions and displacement fronts inside various porous media, therefore, providing insights into microscale displacement processes help elucidate fundamental mechanisms responsible for the observed flow behaviors.

Download or read book Fluid Flow Through Porous Media in Microfluidic Device written by Mengjie Mellisa Wu and published by . This book was released on 2011 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Complex Fluid Flows in Microfluidics written by Francisco José Galindo-Rosales and published by Springer. This book was released on 2017-05-26 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph contains expert knowledge on complex fluid-flows in microfluidic devices. The topical spectrum includes, but is not limited to, aspects such as the analysis, experimental characterization, numerical simulations and numerical optimization. The target audience primarily comprises researchers who intend to embark on activities in microfluidics. The book can also be beneficial as supplementary reading in graduate courses.

Download or read book Microfluidic Device Development Strategies and Flow Control Methods in the Analog and Digital Regimes written by Christopher Anthony Baker and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Microfluidics is the field of study involving the manipulation of fluid in devices with micron scale length dimensions and, typically, nano- to picoliter fluid volumes. Miniaturization gives rise to specific advantages in the field of chemistry and chemical analysis including reduced reagent consumption, automation, integration, improved throughput, and increased sensitivity. Microfluidic devices are typically designed to achieve a specific task, with the development and validation of new devices representing a significant investment of time, cost, and labor. For this reason, the development of new microfluidic devices remains largely the domain of academic and basic science research labs, despite the benefits that these technologies could provide in a wide range of commercial and deployable applications. New microfluidic technologies are typically developed via an iterative cycle of device design, fabrication, and experimental validation which may be repeated dozens of times before a device is produced that achieves the desired performance. This dissertation describes new tools and methods that can significantly reduce the time, cost, and labor invested in the development of microfluidic devices. Fabrication of glass microfluidic devices represents a large portion of the labor and cost involved in the development of new devices. Additionally, traditional fabrication methods involve the use of reagents that pose a serious personal and environmental hazard. A method for rapid fabrication of glass microfluidics by direct laser ablation is described in Chapter 2. This method reduces the cost and time invested in device fabrication. The resulting devices are not identical to counterparts fabricated by traditional methods, bearing different topologies. While electrophoretic performance in laser ablated devices was reduced compared to conventionally fabricated devices, this rapid fabrication protocol is a viable option to accelerate device development in applications that are not limited by electrophoretic performance. The development of new microfluidic devices can be accelerated when new device geometries are evaluated by computer simulation rather than experimentally. The simulation-aided development of a microfluidic fraction collection device is described in Chapter 3. Computer simulations of electroosmotic flow were achieved by finite element analysis of coupled partial differential equations describing electric field, laminar flow, and transport of dilute species in models representing various device geometries. An optimized device geometry was identified by a multivariate statistical method, and only the optimized device geometry was fabricated. Fluid flow in the fabricated device agreed well with simulations, and the device successfully performed electrophoretic separations followed by continuous flow isolation of separated fractions. A new technology in microfluidics, Digital microfluidics (DMF), allows for some analyses to be performed on devices of standardized geometry, thereby eliminating the need for the device development cycle. The versatility of DMF analyses is, therefore, governed largely by the detection strategies that can be employed. Chapter 4 describes the development of a system to achieve online coupling of DMF devices to electrospray ionization mass spectrometry (ESI-MS). This system operates on the Venturi effect, and addresses two primary challenges: 1) the induction of flow in droplets that are unconfined by fluidic channels and at ambient pressure, and 2) the integration of AC voltage (DMF) with high DC voltage (ESI-MS) in a single integrated system. A multivariate approach is used to characterize and optimize the operating parameters of the DMF-ESI-MS system, and semi-quantitative analysis of DMF droplet contents is demonstrated. Future development of this system is described in Chapter 5.

Download or read book The Application of Microfluidics in the Study of Multiphase Flow and Transport in Porous Media of Improved Hydrocarbon Recovery Methods written by Yujing Du and published by . This book was released on 2021 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamental investigation of the underlying physics in multiphase flow and transport phenomena in porous media is crucial for many engineering processes, including environmental remediation, geological sequestration, and improved hydrocarbon recovery. Microfluidics are widely used to provide direct, in-time visualization of multiphase flow behavior at the pore-scale and sometimes extend to the representative elementary volumes (REV) scale. Qualitative and quantitative analysis are obtained from microfluidic experiments and are used for mechanisms interpretations. In this work, microfluidics and micromodels are designed to explore fundamental mechanisms in several enhanced/improved oil recovery processes by performing systematic experiments. First, a study of the low salinity effects in improved oil recovery by microfluidics experiments is presented which explains a type of low-salinity effect with delayed oil recovery and without the presence of clay. Experiments were performed from single-pore microfluidics to a REV scale reservoir-on-a-chip model. A time-dependent, oil-water interaction controlled by diffusion was proposed based on the pore-scale observations. Second, the time-dependent behaviors and the role of surfactant during the low salinity waterflood is further investigated by systematic experiments in a 2.5D, inch-long micromodel using mineral oils with different surfactant concentrations and water with different salinities. It is found that the low salinity effects are significant when the surfactant concentration is sufficiently high. The surfactant also dominates the time-dependent behaviors, where higher surfactant concentration leads to shorter delay time. Third, three inch-long “reservoir-on-a-chip” micromodels were utilized to probe the impacts of the microfracture connectivity on the displacement efficiency and sweep patterns when the mobility ratio is unfavorable and the displacement is unstable. It was observed the presence of microfractures do not necessarily improve the displacement efficiency, but the microfracture connectivity, capillary number and wettability altogether impact on the displacement patterns and the ultimate recovery. Last, the role of viscoelasticity’s effects in reducing residual oil saturation is investigated by performing microfluidic experiments in foot-long (30 cm), heterogeneous glass micromodels (“coreflood-on-a-chip”). Significant redistribution and reconnection of residual ganglia occur due to viscoelasticity induced instabilities during high-viscoelasticity polymer floods, which results in residual ganglia remobilization that ultimately reduces residual saturation

Download or read book Advanced Microfluidic Framework for Understanding of Fluid flow in Porous Media written by Wonjin Yun and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: My research with the microfluidic Reservoir-on-a-Chip (ROC) platform has produced multiple engineering science contributions toward investigating the fundamental mechanisms that dictate transport through subsurface porous media. Microfluidic devices, better known as micromodels, are devices with a connected porous network that allows the direct visualization of complex fluid flow dynamics occurring under transient conditions. The porous pattern of micromodel in my study is analogous to that of natural reservoir rock (i.e. sandstone or carbonate). The micro-pattern is etched in a crystalline silicon wafer with the DRIE (deep reactive ion etching) technique which offers a large aspect ratio (i.e. pore throat-to-body ratio), with more realistic and well-defined structures. Consequently, investigating fluid flow through representative pore network patterns and material in the micromodels have been greatly beneficial to petroleum, geologic, and environmental engineering field. Micromodel studies are based on the direct observation of the pore-scale fluid structures, the visualization of the flow field, and the characterization of matrix-fluid and fluid-fluid interactions. I implemented various methodologies that enable the real-time monitoring of events occurring in a micromodel by integrating them with high-resolution microscopy and laser-induced fluorescence. My research improves petrochemical and geophysical characteristics of transports in micromodels through the development of new micro-fabrication processes, new experimental frameworks, imaging, and novel image processing algorithms. First, my research addresses greater realism in pore structure and visualization of micromodels for the characterization of single and multiphase flows. I optimized dual-etching fabrication and improved 3D structural realism of carbonate-like flow networks inside the micromodel. I applied the micro-particle image velocimetry (micro-PIV). The micro-PIV provides insights into the fluid dynamics within microfluidic channels and relevant fluid velocities controlled predominantly by changes in pore width and depth. Compared with conventional single-depth micromodels, micro-PIV and fluid desaturation pattern prove that the dual-depth carbonate micromodel is a better representation of pore geometry showing more realistic fluid flow and capillary entry pressures. Second, I demonstrated, for the first time, that micromodels monitored using advanced spectral imaging enables real-time and in-situ quantification of the local viscosity of non-Newtonian viscoelastic polyacrylamide EOR polymers. This, in turn, paves the way to validate computational fluid dynamics models for viscoelastic fluids. Third, novel deep-learning algorithms (convolutional neural networks) were applied to the micromodel images for the automated analysis of surface properties. With proper training of deep-learning architectures on high-quality image datasets, I proved that deep-learning has a great potential to serve as a quick and automated image analysis tool for surface wettability determination with an accuracy larger than 95%. Forth, I established an in-house micro-fabrication procedure using a Direct-Write-Lithography technique for the rapid prototyping of new microfluidic designs. I worked on optimizing the micromodel channel design to make the micromodel more suitable for direct visualization of micro-pore scale mixing dynamics between precipitant and oil phase, which may cause asphaltene aggregation and their agglomerations. Furthermore, confocal microscopy enables the 3D reconstruction of asphaltene agglomerates; it reveals the size and size distribution of asphaltene aggregates as a function of flocculation time.

Download or read book Introduction to Microfluidics written by Patrick Tabeling and published by . This book was released on 2010-05-06 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microfluidics deals with fluids flowing in miniaturized systems, and has practical applications in the pharmaceutical, biomedical and chemical engineering fields. This text provides an introduction to this emerging discipline.

Download or read book Microfluidic Cell Culture Systems written by Christopher Bettinger and published by William Andrew. This book was released on 2012-12-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fields of microfluidics and BioMEMS are significantly impacting cell biology research and applications through the application of engineering solutions to human disease and health problems. The dimensions of microfluidic channels are well suited to the physical scale of biological cells, and the many advantages of microfluidics make it an attractive platform for new techniques in biology. This new professional reference applies the techniques of microsystems to cell culture applications. The authors provide a thoroughly practical guide to the principles of microfluidic device design and operation and their application to cell culture techniques. The resulting book is crammed with strategies and techniques that can be immediately deployed in the lab. Equally, the insights into cell culture applications will provide those involved in traditional microfluidics and BioMEMS with an understanding of the specific demands and opportunities presented by biological applications. The goal is to guide new and interested researchers and technology developers to the important areas and state-of-the-practice strategies that will enhance the efficiency and value of their technologies, devices and biomedical products.

Download or read book Analysis of Two Phase Flow Through Low permeability Media written by James Thomas Semrau and published by . This book was released on 1986 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microfluidic Studies of Fluid fluid Interaction and Multiphase Flow in Fractures and Channels written by Negar Nazari and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: World energy demand increases as global population increases. Seeking new solutions and improving the current energy systems are two attractive options to address the existing problems. Processes of interest include CO$_{2}$ storage security, hydrogen storage, and enhanced oil recovery. Studying fluid behavior at pore scale, improves understanding of fundamental mechanisms and enables mechanistic control of the processes involved. Multiphase and multi-component fluid flow is dictated and controlled by pore-scale phenomena. Understanding fluid-fluid interactions and multiphase flow behavior in complex porous media is the essential component of optimizing the subsurface energy design. Microfluidic devices with representative geometry, and length scales are essential to delineate the fundamental mechanisms dictating the pore-scale fluid behavior of multiphase flow in fractures and channels. Therefore, a primary objective of this research is to develop cutting-edge microfluidic devices. My research improves mechanical and physical characteristics of transport processes in micromodels through development of new microfluidic devices, thorough experimental frameworks, and computer-assisted techniques to process and model the results. First, we designed and fabricated a new microfluidic device to better enable study of foam microstructure and rheology in planar fractures. The workflow included finite element analysis of several designs to enhance the pressure tolerance of the device. The new design illustrated improved ability to sustain large differential pressure compared to previous designs in the literature. Our findings validated the previous microvisual studies mentioned in the literature and revealed that foam apparent viscosity is a strong function of foam quality and water velocity at small qualities and this dependency decreases for greater foam qualities and water velocities. Second, we investigated foam flow behavior in microscale fractures and developed a mechanistic transient foam flow model using the population balance method. Microscale experiments in fractures with apertures of 25 and 88 $\mu m$ were used to validate the model for pressure drop, gas saturation, and bubble texture. Key differences related to modeling foam in fractures are the potential for continuously varying gas-liquid curvature in fractures and the relationship of this curvature to apparent foam viscosity. Incorporation of a local foam flow resistance factor is important to representing flow physics accurately. Third, we designed and fabricated a new microfluidic device with a meter-long channel and a rectangular cross section to study the flow behavior of long gas bubbles in noncircular-cross-section capillaries. Our calculations of channel curvature, Dean number, and centripetal acceleration for this novel symmetric loop design illustrated that this capillary tube on a chip behaves, essentially, as a straight channel for a wide range of velocity, U. We found that the pressure drop experienced by bubbles varies as $Ca^{2/3}$ over the range $10^{-7}

Download or read book In Vitro Fertilization written by Zsolt Peter Nagy and published by Springer. This book was released on 2019-07-03 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its revised and expanded second edition - including over 20 new chapters - this comprehensive textbook remains a unique and accessible description of the current and developing diagnostic and treatment techniques and technologies comprising in vitro fertilization (IVF). Arranged thematically in sections, each chapter covers a key topic in IVF in a sensible presentation. Parts one and two describe the planning, design and organization of an ART unit and IVF laboratory and equipment and systems, respectively. The sections that follow provide detailed descriptions of IVF techniques, embryo culture methods, sperm processing and selection, insemination procedures, micromanipulation, embryo evaluation, cryopreservation, and embryo transfer. Concluding sections address issues of management and regulation of ART labs across the globe, as well as special topics and emerging techniques and devices. Chapter authors, all experts in the field, contribute their expertise from around the world. With the addition of learning key points and review questions at the beginning and end of each chapter, this new edition of In Vitro Fertilization is a readily accessible, high quality instructional resource for reproductive medicine trainees at all levels. Practicing reproductive endocrinologists, urologists, and embryologists also will find value in the book, as will infertility researchers.

Download or read book Direct Investigations of Multiphase Flow Phenomena in Microfluidic Models written by Andrew J. Hansen and published by . This book was released on 2015 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: As global energy requirements continue to rise, greater demand is being placed on oil producers to maximize production from conventional reservoirs. Conventional oil production techniques leave behind a significant amount of oil due to discontinuities in the oil phase, causing oil trapping. A primary driver of this phenomenon is snap-off. Understanding of how snap-off is affected by straight walled pore-throat geometries is limited. Better understanding of how geometry mediates snap-off is necessary for more accurate and precise simulations of flow through complex porous media. An idealized three dimensional microfluidic device was used to create an approximate replica of simulated pore-throat systems. The platform allows for the studies of the effect of throat aspect ratio upon displacement mechanisms in a water and oil system to be directly investigated. Three dimensional pore-throat geometries were produced with increasing aspect ratio to investigate the Rayleigh-Plateau instability in free standing bridges of nonwetting liquid. The system was designed to be as close to perfectly water-wet as possible while maintaining regions to allow corner flow and wetting phase continuity. This study was performed with the intent of forming an accurate model of how geometry influences snap-off events. It is hypothesized that liquid will become columnated in the throat and will form a free standing bridge between pores. At this point the bridge either remains stable or deteriorates, depending on whether or not the throat aspect ratio exceeds the Rayleigh-Plateau instability criteria. Experimental results indicated fundamental shortcomings in the fabrication medium, which motivated the development of a new high tensile strength silicone for experimental platforms and fabrication intermediates. Mechanical testing was performed on the high tensile strength silicones, verifying anecdotal strength observations. High tensile strength silicone allows for greater flexibility in the fabrication of complex and high aspect ratio structures. Demonstrating the utility of this material, novel triangular channels machined into glass substrates were replicated using the high tensile strength silicone. Triangular channels provide an excellent representation for naturally occurring porous media undergoing multiphase flow by creating superior wetting phase flow and continuity by increasing the relative wetting phase cross-sectional area. Triangular channels also provide superior capillary pressure control inside a microfluidic device for applications sensitive to capillary pressures. Capillary pressure measurements were performed within triangular channels, verifying that they provide an acceptable microfluidic platform for multiphase flow studies with results consistent with those predicted theoretically. The work performed indicates that snap-off is affected by to throat aspect ratios and length, but other factors such as mixed wettability seem to play a crucial role. To fully investigate the phenomena, microfluidic devices with better wettability will be required. The full development and implementation of triangular channels fabricated in glass will provide devices with the improved geometry, optical, and wettability characteristics for multiphase flow studies.

Download or read book Measurement and Analysis of Two phase Flow Through Low Permeability Media written by Hamid Arastoopour and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterization of Fluid Flow in Paper based Microfluidic Devices written by Noosheen Walji and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scaling and upscaling of fluid flow through permeable media written by Dachang Li and published by . This book was released on 1995 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Analysis of Fluid Flow Through Porous Media written by Jillian M. Goudie and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: