Experimental Determination of the Thermal Accommodation Coefficient for Helium on a Stainless Steel ...

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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

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	1052039
Doc. No	:	TL51156
Main Entry	:	Zampella, Cody S.
Title & Author	:	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
College	:	University of Nevada, Reno
Date	:	2019
Degree	:	M.S.
student score	:	2019
Note	:	78 p.
Abstract	:	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.
Descriptor	:	Fluid mechanics
	:	Mechanical engineering
	:	Nuclear engineering
	:	Packaging
Added Entry	:	Hadj-Nacer, Mustafa
Added Entry	:	University of Nevada, Reno