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A Fundamental Study Of Nucleate Pool Boiling Under Microgravity
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781723497742 Total Pages :302 pages Book Rating :4.4/5 (977 download)
Book Synopsis A Fundamental Study of Nucleate Pool Boiling Under Microgravity by : National Aeronautics and Space Administration (NASA)
Download or read book A Fundamental Study of Nucleate Pool Boiling Under Microgravity written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-23 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study of incipient boiling in short-term microgravity and with a/g = +/- 1 for pool boiling was performed. Calibrated thin gold films sputtered on a smoothly polished quartz surface were used simultaneously for thermal resistance measurements and heating of the boiling surface. The gold films were used for both transient and quasi-steady heating surface temperature measurements. Two test vessels were constructed for precise measurement and control of fluid temperature and pressure: a laboratory pool boiling vessel for the a/g = +/- experiments and a pool boiling vessel designed for the 131 m free-fall in the NASA Lewis Research Center Microgravity Research Facility for the microgravity tests. Measurements included the heater surface temperature, the pressure near the heating surface, and the bulk liquid temperatures. High speed photography was used in the experiments. With high quality microgravity and the measured initial temperature of the quiescent test fluid, R113, the temperature distribution in the liquid at the moment of boiling inception resulting from an imposed step in heat flux is known with a certainty not possible previously. The types of boiling propagation across the large flat heating surface are categorized; the conditions necessary for their occurrence are described. Explosive boiling propagation with a striking pattern of small scale protuberances over the entire vapor mass periphery not observed previously at low heat flux levels is described. For the heater surface with a/g = -1, a step in the heater surface temperature of short duration was imposed. The resulting liquid temperature distribution at the moment of boiling inception was different from that obtained with a step in heat flux. Ervin, Jamie S. and Merte, Herman, Jr. Unspecified Center NASA-CR-188732, NAS 1.26:188732, UM-MEAM-91-08 NAG3-663...
Book Synopsis A Fundamental Study of Nucleate Pool Boiling Under Microgravity by :
Download or read book A Fundamental Study of Nucleate Pool Boiling Under Microgravity written by and published by . This book was released on 1996 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nucleate Pool Boiling in Microgravity by : Jian-Fu Zhao
Download or read book Nucleate Pool Boiling in Microgravity written by Jian-Fu Zhao and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nucleate Pool Boiling Heat Transfer of Binary Mixtures Under Microgravity by : L. H. Chai
Download or read book Nucleate Pool Boiling Heat Transfer of Binary Mixtures Under Microgravity written by L. H. Chai and published by . This book was released on 1997 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Nucleate Pool Boiling of FC-72 Using Microscale Heater Arrays in Microgravity and Earth Gravity Environments by : Nagaraja Kumar Yaddanapudi
Download or read book Study of Nucleate Pool Boiling of FC-72 Using Microscale Heater Arrays in Microgravity and Earth Gravity Environments written by Nagaraja Kumar Yaddanapudi and published by . This book was released on 2000 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microgravity Science and Applications Program Tasks by :
Download or read book Microgravity Science and Applications Program Tasks written by and published by . This book was released on 1991 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Boiling Experiment Facility for Heat Transfer Studies in Microgravity by : National Aeronaut Administration (Nasa)
Download or read book Boiling Experiment Facility for Heat Transfer Studies in Microgravity written by National Aeronaut Administration (Nasa) and published by . This book was released on 2020-07-28 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pool boiling in microgravity is an area of both scientific and practical interest. By conducting tests in microgravity, it is possible to assess the effect of buoyancy on the overall boiling process and assess the relative magnitude of effects with regards to other "forces" and phenomena such as Marangoni forces, liquid momentum forces, and microlayer evaporation. The Boiling eXperiment Facility is now being built for the Microgravity Science Glovebox that will use normal perfluorohexane as a test fluid to extend the range of test conditions to include longer test durations and less liquid subcooling. Two experiments, the Microheater Array Boiling Experiment and the Nucleate Pool Boiling eXperiment will use the Boiling eXperiment Facility. The objectives of these studies are to determine the differences in local boiling heat transfer mechanisms in microgravity and normal gravity from nucleate boiling, through critical heat flux and into the transition boiling regime and to examine the bubble nucleation, growth, departure and coalescence processes. Custom-designed heaters will be utilized to achieve these objectives. Delombard, Richard and McQuillen, John and Chao, David Glenn Research Center NASA/TM-2008-215148, AIAA Paper-2008-0814, E-16311 WBS 825080.04.02.20.07 GAS-LIQUID INTERACTIONS; MICROGRAVITY; NUCLEATE BOILING; HEAT TRANSFER; HEAT FLUX; GRAVITATION; FLUID DYNAMICS; EVAPORATION; COALESCING; MOMENTUM
Book Synopsis Boiling Experiment Facility for Heat Transfer Studies in Microgravity by : Richard Delombard
Download or read book Boiling Experiment Facility for Heat Transfer Studies in Microgravity written by Richard Delombard and published by BiblioGov. This book was released on 2013-07 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pool boiling in microgravity is an area of both scientific and practical interest. By conducting tests in microgravity, it is possible to assess the effect of buoyancy on the overall boiling process and assess the relative magnitude of effects with regards to other "forces" and phenomena such as Marangoni forces, liquid momentum forces, and microlayer evaporation. The Boiling eXperiment Facility is now being built for the Microgravity Science Glovebox that will use normal perfluorohexane as a test fluid to extend the range of test conditions to include longer test durations and less liquid subcooling. Two experiments, the Microheater Array Boiling Experiment and the Nucleate Pool Boiling eXperiment will use the Boiling eXperiment Facility. The objectives of these studies are to determine the differences in local boiling heat transfer mechanisms in microgravity and normal gravity from nucleate boiling, through critical heat flux and into the transition boiling regime and to examine the bubble nucleation, growth, departure and coalescence processes. Custom-designed heaters will be utilized to achieve these objectives.
Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781793902245 Total Pages :26 pages Book Rating :4.9/5 (22 download)
Book Synopsis Boiling Experiment Facility for Heat Transfer Studies in Microgravity by : National Aeronautics and Space Adm Nasa
Download or read book Boiling Experiment Facility for Heat Transfer Studies in Microgravity written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2019-01-14 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pool boiling in microgravity is an area of both scientific and practical interest. By conducting tests in microgravity, it is possible to assess the effect of buoyancy on the overall boiling process and assess the relative magnitude of effects with regards to other "forces" and phenomena such as Marangoni forces, liquid momentum forces, and microlayer evaporation. The Boiling eXperiment Facility is now being built for the Microgravity Science Glovebox that will use normal perfluorohexane as a test fluid to extend the range of test conditions to include longer test durations and less liquid subcooling. Two experiments, the Microheater Array Boiling Experiment and the Nucleate Pool Boiling eXperiment will use the Boiling eXperiment Facility. The objectives of these studies are to determine the differences in local boiling heat transfer mechanisms in microgravity and normal gravity from nucleate boiling, through critical heat flux and into the transition boiling regime and to examine the bubble nucleation, growth, departure and coalescence processes. Custom-designed heaters will be utilized to achieve these objectives. Delombard, Richard and McQuillen, John and Chao, David Glenn Research Center 825080.04.02.20.07
Book Synopsis Acoustic Driven Nucleate Pool Boiling Heat Transfer in Terrestrial and Microgravity Environments by : Jeffrey S. Sitter
Download or read book Acoustic Driven Nucleate Pool Boiling Heat Transfer in Terrestrial and Microgravity Environments written by Jeffrey S. Sitter and published by . This book was released on 1995 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Phase Change by : S.G. Kandlikar
Download or read book Handbook of Phase Change written by S.G. Kandlikar and published by Routledge. This book was released on 2019-01-22 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive coverage of the basic phenomena. It contains twenty-five chapters which cover different aspects of boiling and condensation. First the specific topic or phenomenon is described, followed by a brief survey of previous work, a phenomenological model based on current understanding, and finally a set of recommended design equa
Book Synopsis Microgravity Science and Applications Program Tasks by : United States. Office of Space Science and Applications
Download or read book Microgravity Science and Applications Program Tasks written by United States. Office of Space Science and Applications and published by . This book was released on 1988 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recueil factice d'articles de presse et de documents sur le livre du centenaire de la "Revue des Deux mondes" by :
Download or read book Recueil factice d'articles de presse et de documents sur le livre du centenaire de la "Revue des Deux mondes" written by and published by . This book was released on with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nucleate Pool Boiling Bubble Dynamics in a Microgravity Field by : Hsiu Deng
Download or read book Nucleate Pool Boiling Bubble Dynamics in a Microgravity Field written by Hsiu Deng and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781725639331 Total Pages :34 pages Book Rating :4.6/5 (393 download)
Book Synopsis Design and Test of a Compact Optics System for the Pool Boiling Experiment by : National Aeronautics and Space Administration (NASA)
Download or read book Design and Test of a Compact Optics System for the Pool Boiling Experiment written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experiment described seeks to improve the understanding of the fundamental mechanisms that constitute nucleate pool boiling. The vehicle for accomplishing this is an investigation, including tests to be conducted in microgravity and coupled with appropriate analyses, of the heat transfer and vapor bubble dynamics associated with nucleation, bubble growth/collapse and subsequent motion, considering the interrelations between buoyancy, momentum and surface tension which will govern the motion of the vapor and surrounding liquid, as a function of the heating rate at the heat transfer surface and the temperature level and distribution in the bulk liquid. The experiment is designed to be contained within the confines of a Get-Away-Special Canister (GAS Can) installed in the bay of the space shuttle. When the shuttle reaches orbit, the experiment will be turned on and testing will proceed automatically. In the proposed Pool Boiling Experiment a pool of liquid, initially at a precisely defined pressure and temperature, will be subjected to a step imposed heat flux from a semitransparent thin-film heater forming part of one wall of the container such that boiling is initiated and maintained for a defined period of time at a constant pressure level. Transient measurements of the heater surface and fluid temperatures near the surface will be made, noting especially the conditions at the onset of boiling, along with motion photography of the boiling process in two simultaneous views, from beneath the heating surface and from the side. The conduct of the experiment and the data acquisition will be completely automated and self-contained. For the initial flight, a total of nine tests are proposed, with three levels of heat flux and three levels of subcooling. The design process used in the development and check-out of the compact photographic/optics system for the Pool Boiling Experiment is documented. Ling, Jerri S. and Laubenthal, James R. Glenn Research Center NASA-TM-102...
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
