Experimental Investigation Of Nucleate Boiling Bubble Dynamics In Normal And Zero Gravities
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Experimental Investigation Of Nucleate Boiling Bubble Dynamics In Normal And Zero Gravities
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Author : Thomas H. Cochran
language : en
Publisher:
Release Date : 1968
Experimental Investigation Of Nucleate Boiling Bubble Dynamics In Normal And Zero Gravities written by Thomas H. Cochran and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Bubbles categories.
Experimental Investigation Of Nucleate Boiling Bubble Dynamics In Normal And Zero Gravities
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Author : Thomas H. Cochran
language : en
Publisher:
Release Date : 1968
Experimental Investigation Of Nucleate Boiling Bubble Dynamics In Normal And Zero Gravities written by Thomas H. Cochran and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with categories.
Nasa Technical Note
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Author :
language : en
Publisher:
Release Date : 1970
Nasa Technical Note written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.
Monthly Catalog Of United States Government Publications
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Author : United States. Superintendent of Documents
language : en
Publisher:
Release Date : 1968
Monthly Catalog Of United States Government Publications written by United States. Superintendent of Documents and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Government publications categories.
Forces Acting On Bubbles In Nucleate Boiling Under Normal And Reduced Gravity Conditions
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Author : Edward G. Keshock
language : en
Publisher:
Release Date : 1964
Forces Acting On Bubbles In Nucleate Boiling Under Normal And Reduced Gravity Conditions written by Edward G. Keshock and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Bubbles categories.
Bubble Dynamics And Heat Transfer In Pool Boiling On Wires At Different Gravity
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Author : Jian-Fu Zhao
language : en
Publisher:
Release Date : 2011
Bubble Dynamics And Heat Transfer In Pool Boiling On Wires At Different Gravity written by Jian-Fu Zhao and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Biotechnology categories.
A series of experimental studies on bubble dynamical behaviors and heat transfer in pool boiling on thin wires in different gravity conditions have been performed in the past years, including experiments in long-term microgravity aboard the 22nd Chinese recoverable satellite RS-22, in short-term microgravity in the drop tower Beijing, and in normal gravity on the ground. Steady pool boiling of degassed R113 on thin platinum wires has been studied using a temperature-controlled heating method. A voltage-controlled heating method has also been used in normal gravity. A slight enhancement of nucleate boiling heat transfer is observed in microgravity, while dramatic changes of bubble behaviors are very evident. Considering the influence of the Marangoni effects, the different characteristics of bubble behaviors in microgravity have been explained. A new bubble departure model including the influence of the Marangoni effects has also been proposed, which can predict the whole observation both in microgravity and in normal gravity. The value of CHF (critical heat flux) in microgravity is lower than that in normal gravity, but it can be predicted well by the Lienhard-Dhir correlation, although the dimensionless radius, or the square root of the Bond number, in the present case is far beyond its initial application range. A further revisit on the scaling of CHF with heater radius in normal gravity, which is focused on the case of a small Bond number, has also been performed in our laboratory using different kinds of working fluids at different subcooling conditions. Interactions between the influences of the subcooling and heater radius will be important for the case of a small Bond number. In addition to the Bond number, there may exist some other parameters, which may be material-dependent, that play important roles in the CHF phenomenon with a small Bond number.
Monthly Catalog Of United States Government Publications Cumulative Index
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Author : United States. Superintendent of Documents
language : en
Publisher:
Release Date : 1979
Monthly Catalog Of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with United States categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.
Nucleate And Film Boiling In Reduced Gravity From Horizontal And Vertical Wires
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Author : Robert Siegel
language : en
Publisher:
Release Date : 1965
Nucleate And Film Boiling In Reduced Gravity From Horizontal And Vertical Wires written by Robert Siegel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Film boiling categories.
Nucleate boiling was studied experimentally from electrically heated horizontal and vertical wires (0.0197-in. diam.) in water, ethyl alcohol, and 60-percent-by-weight aqueous sucrose solution in gravity fields of 0.014 and 1.0 times Earth gravity. The fluids were at their saturation temperatures at atmospheric pressure. The gravity reduction to 0.014 times Earth gravity caused a shift of only a few degrees in the curve of heat flux as a function of the difference between surface and saturation temperatures. Film boiling of ethyl alcohol was observed at Earth gravity and at several reduced gravity fields down to 0.014 times Earth gravity. For both the horizontal and vertical orientations, the gravity field and the circumferential surface tension at the interface of the vapor film surrounding the thin wire proved to be very important for the determination of the vapor removal pattern. As gravity was reduced, the vapor film behavior for the vertical orientation approached that for the horizontal position. A motion picture film is available that illustrates the boiling behavior in reduced gravity.
A Selected Listing Of Nasa Scientific And Technical Reports
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Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
language : en
Publisher:
Release Date : 1969
A Selected Listing Of Nasa Scientific And Technical Reports written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Aeronautics categories.