Download or read book Microgravity Fluid Separation Physics written by J. Michael Shoemaker and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics of Fluids in Microgravity written by Rodolfo Monti and published by CRC Press. This book was released on 2002-01-10 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a microgravity experiment, the conditions prevalent in fluid phases can be substantially different from those on the ground and can be exploited to improve different processes. Fluid physics research in microgravity is important for the advancement of all microgravity scients: life, material, and engineering. Space flight provides a unique laboratory that allows scientists to improve their understanding of the behaviour of fluids in low gravity, allowing the investigation of phenomena and processes normally masked by the effects of gravity and thus difficult to study on Earth. Physics of Fluids in Microgravity provides a clear view of recent research and progress in the different fields of fluid research in space. The topics presented include bubles and drops dynamics, Maragoni flows, diffustion and thermodiffusion, solidfication,a nd crystal growth. The results obtained so far are, in some cases, to be confirmed by extensive research activities on the International Space station, where basic and applied microgravity experimentation will take place in the years to come.
Download or read book Second Microgravity Fluid Physics Conference written by and published by . This book was released on 1994 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluids Materials and Microgravity written by Marcello Lappa and published by Elsevier. This book was released on 2004 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Space research -- Fundamental concepts, mathematical models and scaling analysis for the microgravity environment -- Dispersed droplets and metal alloys -- Growth of semiconductors : the floating zone technique -- Macromolecular crystal growth : surface kinetics and morphological studies -- Macromolecular crystal growth at macroscopic length scales -- The growth of biological tissues.
Download or read book Microgravity Fluid Physics and Heat Transfer written by V. K. Dhir and published by Begell House Publishers. This book was released on 2000 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microgravity Fluid Physics Conference written by United States. National Aeronautics and Space Administration. Microgravity Fluid Dynamics Discipline Working Group and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microgravity A New Tool for Space Experiments written by Christina Taylor and published by Willford Press. This book was released on 2023-09-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microgravity is the condition in which people or objects appear to be weightless. The microgravity lab consisting of only-in-space conditions facilitates a wide range of investigations in various disciplines. This lab provides a platform with greatly reduced non-gravitational sources of noise, access to the vacuum conditions of space, extreme heat and cold, large distances, and high velocity that is beneficial for physics research. The concept of microgravity is used in advanced materials science research, because it changes the processes such as crystal growth, fluid mixing, separation between gases and liquids, heat transfer, solidification, and combustion. Access to microgravity is beneficial for biology and human health. Data about how different organisms react to a microgravity environment and the ways various biological functions change in the absence of gravity increase the understanding related to organisms. This book is a compilation of chapters that discuss the most vital concepts and emerging trends on the subject of microgravity. It aims to serve as a resource guide for students and researchers alike.
Download or read book Nasa s Microgravity Fluid Physics Strategic Research Roadmap written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-20 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Microgravity Fluid Physics Program at NASA has developed a substantial investigator base engaging a broad crosssection of the U.S. scientific community. As a result, it enjoys a rich history of many significant scientific achievements. The research supported by the program has produced many important findings that have been published in prestigious journals such as Science, Nature, Journal of Fluid Mechanics, Physics of Fluids, and many others. The focus of the program so far has primarily been on fundamental scientific studies. However, a recent shift in emphasis at NASA to develop advanced technologies to enable future exploration of space has provided motivation to add a strategic research component to the program. This has set into motion a year of intense planning within NASA including three workshops to solicit inputs from the external scientific community. The planning activities and the workshops have resulted in a prioritized list of strategic research issues along with a corresponding detailed roadmap specific to fluid physics. The results of these activities were provided to NASA s Office of Biological and Physical Research (OBPR) to support the development of the Enterprise Strategy document. This paper summarizes these results while showing how the planned research supports NASA s overall vision through OBPR s organizing questions. Motil, Brian J. and Singh, Bhim S. Glenn Research Center NASA/TM-2004-212914, E-14353
Download or read book Experimental and Theoretical Investigations of the Physical Processes Related to the Retention Capability of a Double Screen Element against Liquid Hydrogen in Earth s Gravity and in Microgravity with Respect to the Applied Stimuli written by André Pingel and published by Cuvillier Verlag. This book was released on 2022-08-04 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal screens are commonly used as components for fluid handling in spacecraft and rocket tank designs. In most cases, the screens perform a passive separation of the propellant phases. The separation of the liquid from the gaseous propellant phase, is a special challenge. Liquid-gas phase separation means that the gaseous phase is allowed to enter a phase separation device while the liquid phase is blocked. The technical application of this process is the depressurization in a propellant tank. A certain amount of the gaseous propellant phase is vented from the tank through the gas port. The liquid propellant phase remains in the tank in order to be stored for the engine. However, if the tank causes a liquid movement during the depressurization, a part of the liquid can potentially enter the gas port. In order to prevent the unwanted liquid outflow, a separation of the liquid from the gas is necessary. This is possible with the aid of a double screen element and has already been performed for storable liquids in Earth’s gravity and microgravity as well as for cryogenic liquids in Earth’s gravity. At the current state of the art, the separation of the liquid from the gaseous phase of the cryogenic propellant hydrogen using a double screen element has not been performed in microgravity. However, with regard to a possible application, it is mandatory to investigate the function of the double screen element for the real propellant under relevant environmental conditions. In this work, a cryogenic test facility has been developed and operated successfully under Earth’s gravity and microgravity conditions using the drop tower at the University of Bremen. Hereby, the original, cryogenic propellant phases: liquid and gaseous hydrogen, have been used. The experiments show the appearance of the physical processes which are related to the retention capability of a double screen element against liquid hydrogen. Furthermore, these physical processes can obviously be influenced by an unknown boundary condition at the screens: the screen saturation. This unknown boundary condition in turn can obviously be influenced by a certain stimulus which causes a special, fluid mechanical process. A simplified mathematical and two numerical models have been developed which combine the observed, physical processes in the experiments. Two fitting parameters are introduced which influence the flow through screen pressure loss of the liquid and the gaseous hydrogen phase. After the fitting to experimental data, the two fitting parameters have been interpreted with respect to a possible screen saturation. The results lead to a prediction of the unknown boundary condition and indicate that a partial saturation of the screens with liquid could be present in each considered experiment. This can possibly lead to a major influence of the overall resistance of the double screen element against liquid hydrogen.
Download or read book Microgravity Fluid Mechanics written by Hans J. Rath and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: Substantial progress has been made in the field of fluid mechanics under compensated gravity effects (microgravity). The main task of this disciplinehas evolved tremendously. Starting out with the aim of providing assistance in describing flow problems in other microgravity sciences, microgravityfluid mechanics has itself now become acknowledge as a powerful means of research. The IUTAM Symposium on Microgravity Fluid Mechanics has pro- vided the long-awaited forum for scientists from 15 coun- tries to discuss and concretize the "state-of-the-art" in this discipline. The main themes treated are: Interface Phe- nomena, Convective Processes; Marangoni effects, Solidifica- tion, Combustion, Physico-Chemical Processes, Multiphase Phenomena, Residual Acceleration effects, Fluid Handling and Non-Newtonian Flows.
Download or read book Third Microgravity Fluid Physics Conference written by and published by . This book was released on 1977 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical and Analytical Study of Passive Cyclonic Separator Performance in Microgravity written by Yeyuan Li and published by . This book was released on 2021 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The separation of two-phase flow is essential for many fluid systems in the microgravity environment. Unlike the situation on earth, gas and liquid cannot separate spontaneously due to the absence of buoyancy in space. Therefore, phase separators must be designed to complete this task. The passive cyclonic separator is a prominent technology for gas-liquid separation in microgravity for the reason that it is free of maintenance and power consumption. However, the complex flow physics within the separator presents significant challenges in designing the device and characterizing its performance. In the present study, numerical simulations and analytical modeling are combined to construct a system of control volume equations that can quantitatively describe the key features of the separator, as well as defining the parameters for design purposes. The numerical simulations are conducted utilizing an open-source computational fluid dynamics (CFD) software OpenFOAM. Both two dimensional (2D) axisymmetric modeling and three-dimensional (3D) modeling are performed. The CFD work in the current study focuses on pure-liquid injection cases in which gas cores would still form without small gas bubbles. Therefore, the volume of fluid (VOF) approach is used to capture the large scale gas-liquid interface. Since the swirling flow inside the separator is mostly turbulent, a Reynolds stress transport model (RSTM) is adopted for the simulations. The CFD technique provides enough amount of data to study the important parameters of the separator, which facilitate and complete the analytical modeling. The analytical modeling is developed based on control-volume approximations. This approach helps clarify the fluid physics by transforming the complicated physical phenomena into simple control-volume equations representing the mass and angular momentum conservations as well as pressure balance at the interface. With the aid of CFD results, the control-volume equations are closed. The predictions produced by solving the equations are reasonably accurate compared to the experimental results. Then, the equations are further improved to include gas-liquid two-phase injection situations. In addition, the surface tension effect is also investigated and included in the analysis.
Download or read book Low Gravity Fluid Dynamics and Transport Phenomena written by Robert L. Sani and published by AIAA. This book was released on 1990 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluids Materials and Microgravity written by Marcello Lappa and published by Elsevier. This book was released on 2004-12-09 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each year, universities and research centres – most particularly the major space agencies such as NASA, ESA, and NASDA – devote a vast amount of time and money into the research of materials behaviour and production in microgravity. Recently, the possibility of creating special alloys, inorganic and organic crystals, as well as biological (living) tissues in this condition has been investigated. Fluids, Materials and Microgravity provides a solid basis of established knowledge – through literature, fundamental studies, experimental methods, numerical (basic and sophisticated) techniques – as well as the latest in research advancements. Important for the prediction of material behaviour when exposed to the environment of space, this book explores the new knowledge provided by microgravity-based studies in producing unique inorganic, and organic materials on Earth (and in designing related new technological processes). A vital resource for any scientists interested in the understanding and modelling of the new important physical mechanisms disclosed by microgravity research, and in their possible effect on the production and behaviour of materials both in space and on Earth. A vital resource for any scientists interested in the effect of microgravity on the production and behaviour of materials. Covers typical fluid-dynamic disturbances which can affect the behaviour and final quality of materials both in space and on Earth, and possible strategies to contain their effects Thorough attention is devoted to the most promising and innovative technological processes provided by microgravity experimentation Information is provided through application-based engineering models, as well as mathematical frameworks, to facilitate a deeper understanding of physical mechanisms
Download or read book Sixth Microgravity Fluid Physics and Transport Phenomena Conference Abstracts written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-27 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Sixth Microgravity Fluid Physics and Transport Phenomena Conference provides the scientific community the opportunity to view the current scope of the Microgravity Fluid Physics and Transport Phenomena Program, current research opportunities, and plans for the near future. The conference focuses not only on fundamental research but also on applications of this knowledge towards enabling future space exploration missions. A whole session dedicated to biological fluid physics shows increased emphasis that the program has placed on interdisciplinary research. The conference includes invited plenary talks, technical paper presentations, poster presentations, and exhibits. This TM is a compilation of abstracts of the papers and the posters presented at the conference. Web-based proceedings, including the charts used by the presenters, will be posted on the web shortly after the conference. Singh, Bhim (Compiler) Glenn Research Center RTOP 101-58-0A...
Download or read book Second Microgravity Fluid Physics Conference written by Microgravity Fluid Dynamics Discipline Working Group and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physical Science Under Microgravity Experiments on Board the SJ 10 Recoverable Satellite written by Wenrui Hu and published by Springer Nature. This book was released on 2019-10-16 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the physical science experiments in a space microgravity environment conducted on board the SJ-10 recoverable satellite, which was launched on April 6th, 2016 and recovered on April 18th, 2016. The experiments described were selected from ~100 proposals from various institutions in China and around the world, and have never previously been conducted in the respective fields. They involve fluid physics and materials science, and primarily investigate the kinetic properties of matter in a space microgravity environment. The book provides a comprehensive review of these experiments, as well as the mission’s execution, data collection, and scientific outcomes.
