Download or read book Optimizing Particle based Flow Visualization written by Alexy Agranovsky and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Within both the scientific and academic communities, the study and visualization of flow is an essential tool used to model fluid transport and mixing. Modern Computational Fluid Dynamics (CFD) simulations are used to successfully approximate real-world physics to reproduce dynamic flow behavior, however, from simulation to visualization, maintaining a high level of accuracy is fraught with obstacles. In this thesis, we address two major challenges to visualizing fluid flow data accurately. The first challenge, encountered during the simulation stage, is the inability of supercomputers to allow simulations to be saved at their native resolution. The second challenge, confronted in the post-processing stage, involves combating the substantial and discouraging computational expense associated with highly accurate particle-based visualization techniques. We begin by presenting a framework for detecting and accumulating flow characteristics during the particle advection process, aimed at optimizing the associated computational burden. Consequently, we provide evidence of a wealth of fluid flow knowledge that can be gained with little computational overhead. We then extend the detection of these flow transformation effects to the simulation stage, offering a novel compression algorithm designed to dynamically distribute the constrained budget set when writing simulation results to disk. The output focuses on flow deformation and rotation, thereby improving visualization accuracy in turbulent regions. Next, we describe the versatility of interpolation as a substitute for costly and iterative numerical integration. We present a method for categorizing salient flow features using only a sub- set of advected particles to interpolate the remaining domain information. Overall, the number of advection steps is drastically cut down and our method is able to better visualize features of interest with fewer particles. Building on this work, we eliminate advection entirely and develop an inter- active exploration environment based solely on interpolating trajectory position information. After achieving positive results in the visualization stage, we further explore the Lagrangian representation - a dense sampling of the flow field with particle trajectories - as an alternative output to CFD simulations. Through a series of comprehensive tests, we verify that the Lagrangian representation is less sensitive than traditional output to the unavoidable temporal compression that occurs when writing to disk. Subsequently, we demonstrate that particle trajectories extracted during the post- processing stage are more accurate, with the added benefit of increased performance and less disk space usage necessary to store the simulation output itself. The primary objective of our work is to advance the field of flow visualization, focusing on the challenges that arise when high accuracy is required. With CFD simulations growing ever more complex and many scientists within academia and industry turning to flow visualization, we provide solutions to help retain flow field accuracy while optimizing both the storage of simulation data on disk and the computational expense of particle-based visualization techniques.
Download or read book Particle based Flow Visualization written by Kai Bürger and published by . This book was released on 2010 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Opacity Optimization and Inertial Particles in Flow Visualization written by Tobias Günther and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flow Visualization and Image Analysis written by F.T. Nieuwstadt and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in fluid mechanics depends heavily on the availability of good experimental data which can inspire new ideas and concepts but which are also necessary to check and validate theories and numerical calculations. With the advent of new recording and image analysis techniques new and promising experimental methods in fluid flows have presented themselves which are rather newly developed techniques such as particle tracking velocimetry (PTV), particle image velocimetry (PIV) and laser fluorescene (LIF). This volume presents state-of-the-art research on these techniques and their application to fluid flow. Selected papers from the EUROMECH conference on Image Analysis are published in this volume.
Download or read book Techniques for Visualizing Particle based Flow Fields written by Jennifer Sara Chandler and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents a variety of techniques for visualizing particle-based flow fields, in particular Smoothed Particle Hydrodynamics (SPH) simulations. Visualization techniques developed with the structure of a particle-based flow field in mind can have better performance and accuracy than ones adapted from vector field flow simulations. The first such technique is an illustrative rendering approach to visualizing particle systems created from advecting particles in fluid simulations. Techniques such as volume rendering, silhouette edges, and trajectory arrows allow the user to understand what is happening in the flow field both at a single time step and over time. The second technique is a WebGL-based remote visualization system for SPH data. Users can view a volume rendering of the SPH data stored as an octree on a remote server without having to download the full data set. The next technique is an interpolation-based approach to tracing pathlines in particle-based flow fields. This technique focuses on SPH simulations and uses the smoothing kernel to weight neighboring simulation particle trajectories to create new pathlines. The final contribution is an analysis of the interpolation-based pathline tracing approach. We classify the sources of error in the particle advection in relation to various flow properties such as trajectory length, particle neighborhood change, and stretching in the flow field. We present a theoretical bound on the advection error using this pathline tracing method.
Download or read book Flow Visualization written by Alexander J. Smits and published by World Scientific. This book was released on 2012 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the 2nd edition of the book, Flow Visualization: Techniques and Examples, which was published by Imperial College Press in 2000. Many of the chapters have been revised and updated to take into consideration recent changes in a number of flow visualization and measurement techniques, including an updated high quality flow gallery. Unique among similar publications, this book focuses on the practical rather than theoretical aspects. Obtaining high quality flow visualization results is, in many ways, more of an art than a science, and experience plays a key deciding role. The depth and breadth of the material will make this book invaluable to readers of all levels of experience in the field.
Download or read book Flow Visualization in Materials Processing written by Tomomasa Uemura and published by Springer. This book was released on 2017-10-05 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive review of particle image velocimetry (PIV) and particle tracking velocimetry (PTV) as tools for experimental fluid dynamics (EFD). It shares practical techniques for high-speed photography to accurately analyze multi-phase flows; in particular, it addresses the practical know-how involved in high-speed photography, including e.g. the proper setup for lights and illumination; optical systems to remove perspective distortion; and the density of tracer particles and their fluorescence in the context of PIV and PTV. In this regard, using the correct photographic technique plays a key role in the accurate analysis of the respective flow. Practical applications include bubble and liquid flow dynamics in materials processes agitated by gas injection at high temperatures, mixing phenomena due to jet-induced rotary sloshing, and wettability effects on the efficiency of the processes.
Download or read book Topological Methods in Data Analysis and Visualization VI written by Ingrid Hotz and published by Springer Nature. This book was released on 2021-09-28 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a result of a workshop, the 8th of the successful TopoInVis workshop series, held in 2019 in Nyköping, Sweden. The workshop regularly gathers some of the world’s leading experts in this field. Thereby, it provides a forum for discussions on the latest advances in the field with a focus on finding practical solutions to open problems in topological data analysis for visualization. The contributions provide introductory and novel research articles including new concepts for the analysis of multivariate and time-dependent data, robust computational approaches for the extraction and approximations of topological structures with theoretical guarantees, and applications of topological scalar and vector field analysis for visualization. The applications span a wide range of scientific areas comprising climate science, material sciences, fluid dynamics, and astronomy. In addition, community efforts with respect to joint software development are reported and discussed.
Download or read book Optimization of Micro Processes in Fine Particle Agglomeration by Pelleting Flocculation written by Benjamin Oyegbile and published by CRC Press. This book was released on 2016-06-22 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Efficient particle separation in order to meet stringent regulatory standards represent one of the biggest challenges facing the process industry operators today. Emerging environmental problems such as climate change, population growth and natural resource depletion make it more compelling to undertake research into alternative phase separation techniques and optimization of existing ones. Meeting this challenge requires innovative, revolutionary and integrated approach in the design and optimization of various unit processes in fine particle separation. Flocculation is widely used as an effective phase separation technique across many process industries such as water and wastewater treatment and in minerals processing. In this work, a new pre-treatment technique was developed using a patented bench scale reactor unit as a technical proof of concept. Furthermore, the book provides a valuable insight into the hydrodynamics and fluid-particle interactions within the agglomeration units. The relatively high solids content of the stable pellets (approximately 30 %) and very low residual turbidity of the post-sedimentation supernatant (7 NTU) clearly demonstrate the potential of this technique. In addition to significantly improving the subsequent solid-liquid separation efficiency, this study also showed that the effluent can be recycled back into the sewer network or utilized for non-portable reuse. The findings obtained from this research will be extremely useful in the scaling up and optimization of the reactor system.
Download or read book Proceedings of the International Conference on Applications of Machine Intelligence and Data Analytics ICAMIDA 2022 written by Sharvari Tamane and published by Springer Nature. This book was released on 2023-05-01 with total page 1027 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an open access book. As on date, huge volumes of data are being generated through sensors, satellites, and simulators. Modern research on data analytics and its applications reveal that several algorithms are being designed and developed to process these datasets, either through the use of sequential and parallel processes. In the current scenario of Industry 4.0, data analytics, artificial intelligence and machine learning are being used to support decisions in space and time. Further, the availability of Graphical Processing Units (GPUs) and Tensor Processing Units (TPUs) have enabled to processing of these datasets. Some of the applications of Artificial Intelligence, Machine Learning and Data Analytics are in the domains of Agriculture, Climate Change, Disaster Prediction, Automation in Manufacturing, Intelligent Transportation Systems, Health Care, Retail, Stock Market, Fashion Design, etc. The international conference on Applications of Machine Intelligence and Data Analytics aims to bring together faculty members, researchers, scientists, and industry people on a common platform to exchange ideas, algorithms, knowledge based on processing hardware and their respective application programming interfaces (APIs).
Download or read book Handbook Of Flow Visualization written by Wen Jei Yang and published by Routledge. This book was released on 2018-12-19 with total page 1410 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions from some of the world's leading experts, the second edition of this classic reference compiles all major techniques of flow visualization and demonstrates their applications in all fields of science and technology. A new chapter has been added that covers flow visualization applications in large wide tunnels for airplane and automobile testing. Several important examples of applications are included. A second new chapter details the use of infrared (IR) cameras for detecting and observing the boundary layer transition in industrial wind tunnels and flight testing of commercial transport airplanes. A final new chapter has been added on multiphase flow and pulsed-light velocimetry.
Download or read book Springer Handbook of Experimental Fluid Mechanics written by Cameron Tropea and published by Springer Science & Business Media. This book was released on 2007-10-09 with total page 1570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying DVD-ROM contains ... "all chapters of the Springer Handbook."--Page 3 of cover.
Download or read book Flow Visualization written by Wolfgang Merzkirch and published by Elsevier. This book was released on 2012-12-02 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flow Visualization describes the most widely used methods for visualizing flows. Flow visualization evaluates certain properties of a flow field directly accessible to visual perception. Organized into five chapters, this book first presents the methods that create a visible flow pattern that could be investigated by visual inspection, such as simple dye and density-sensitive visualization methods. It then deals with the application of electron beams and streaming birefringence. Optical methods for compressible flows, hydraulic analogy, and high-speed photography are discussed in other chapters. With appropriate flow pictures, this book tries to distinguish the various methods and the range of their applicability by outlining the physical principles on which each method is based.
Download or read book Swarm Intelligent Systems written by Nadia Nedjah and published by Springer Science & Business Media. This book was released on 2006-06-27 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: Systems designers have learned that many agents co-operating within the system can solve very complex problems with a minimal design effort. In general, multi-agent systems that use swarm intelligence are said to be swarm intelligent systems. Today, these are mostly used as search engines and optimization tools. This volume reviews innovative methodologies of swarm intelligence, outlines the foundations of engineering swarm intelligent systems and applications, and relates experiences using the particle swarm optimisation.
Download or read book Real Time Particle Systems and Their Application to Flow Visualization written by Nicolas Cuntz and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling Simulation and Optimization of Complex Processes written by Hans Georg Bock and published by Springer Science & Business Media. This book was released on 2008-06-19 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume covers the broad interdisciplinary spectrum of scientific computing and presents recent advances in theory, development of methods, and applications in practice.
Download or read book Modeling Design and Simulation of Systems written by Mohamed Sultan Mohamed Ali and published by Springer. This book was released on 2017-08-24 with total page 801 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-volume set CCIS 751 and CCIS 752 constitutes the proceedings of the 17th Asia Simulation Conference, AsiaSim 2017, held in Malacca, Malaysia, in August/September 2017. The 124 revised full papers presented in this two-volume set were carefully reviewed and selected from 267 submissions. The papers contained in these proceedings address challenging issues in modeling and simulation in various fields such as embedded systems; symbiotic simulation; agent-based simulation; parallel and distributed simulation; high performance computing; biomedical engineering; big data; energy, society and economics; medical processes; simulation language and software; visualization; virtual reality; modeling and Simulation for IoT; machine learning; as well as the fundamentals and applications of computing.
