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" Cosmic Radiation in Contemporary Astrophysics "
edited by Maurice M. Shapiro.
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Latin Dissertation
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| Language of Document
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English
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| Record Number
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1052039
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| Doc. No
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TL51156
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| Main Entry
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Zampella, Cody S.
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| Title & Author
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Experimental Determination of the Thermal Accommodation Coefficient for Helium on a Stainless Steel Surface Using a Concentric Cylinders Apparatus\ Zampella, Cody S.Hadj-Nacer, Mustafa
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| College
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University of Nevada, Reno
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| Date
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2019
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| Degree
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M.S.
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2019
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| Note
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78 p.
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| Abstract
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Vacuum drying of nuclear fuel canisters may cause the temperature of fuel assemblies to considerably increase due to the effect of gas rarefaction at low pressures. This effect may induce a temperature-jump at the gas-solid interfaces. It is important to predict the temperature-jump at these interfaces to accurately estimate the maximum temperature of the fuel assemblies during vacuum drying. The objective of this work is to set up a concentric cylinder experimental apparatus that can acquire data to benchmark rarefied gas heat transfer simulations and determine the thermal accommodation coefficient at the interface between stainless-steel surfaces and helium gas. The thermal accommodation coefficient is used to characterize the temperature-jump at the interface, and is determined by measuring the temperature difference and heat flux across a 2-mm gap between the concentric cylinders that contains rarefied helium and compare the results to analytical calculations in the slip rarefaction regime.
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| Descriptor
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Fluid mechanics
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Mechanical engineering
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Nuclear engineering
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Packaging
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| Added Entry
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Hadj-Nacer, Mustafa
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| Added Entry
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University of Nevada, Reno
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