An experimental assembly for precise measurement of thermal accommodation coefficients

2011 ◽  
Vol 82 (3) ◽  
pp. 035120 ◽  
Author(s):  
Wayne M. Trott ◽  
Jaime N. Castañeda ◽  
John R. Torczynski ◽  
Michael A. Gallis ◽  
Daniel J. Rader
Keyword(s):  
Precise Measurement ◽  
Thermal Accommodation ◽  
Experimental Assembly ◽  
Accommodation Coefficients

scholarly journals Measurement of Thermal Accommodation Coefficients Using Laser-Induced Incandescence

2007 ◽  
Author(s):  
K. J. Daun ◽  
P. H. Mercier ◽  
G. J. Smallwood ◽  
F. Liu ◽  
Y. Le Page
Keyword(s):  
Deformation Rate ◽  
Surface Deformation ◽  
Accommodation Coefficient ◽  
Polyatomic Gases ◽  
Thermal Accommodation ◽  
Laser Induced Incandescence ◽  
Translational Mode ◽  
Accommodation Coefficients ◽  
Thermal Accommodation Coefficient ◽  
Gas Molecules

Laser-induced incandescence (LII) is used to measure the thermal accommodation coefficient between soot sampled from a well-characterized flame and various monatomic and polyatomic gases. These measurements show that the thermal accommodation coefficient between soot and monatomic gases increases with molecular mass due to the decreasing speed of incident gas molecules and corresponding decrease in surface deformation rate, and that energy is transferred preferentially from the surface to the translational mode of the polyatomic gas molecules over internal energy modes.

Formula for Thermal Accommodation Coefficients

1967 ◽  
Vol 46 (6) ◽  
pp. 2376-2386 ◽  
Author(s):  
Frank O. Goodman ◽  
Harold Y. Wachman
Keyword(s):  
Thermal Accommodation ◽  
Accommodation Coefficients

Thermal conductances in a collisionless gas between coaxial cylinders and concentric spheres

1967 ◽  
Vol 1 (2) ◽  
pp. 209-217 ◽  
Author(s):  
Yau Wu
Keyword(s):  
General Theory ◽  
Velocity Distribution ◽  
Thermal Conduction ◽  
Thermal Conductance ◽  
Coaxial Cylinders ◽  
Thermal Transpiration ◽  
Thermal Accommodation ◽  
Exact Theory ◽  
Concentric Spheres ◽  
Accommodation Coefficients

The thermal conductances in a collisionless gas between coaxial cylinders and concentric spheres have been obtained for arbitrary thermal accommodation coefficients. This exact theory is based on the general theory of thermal conduction of collisionless gas developed recently by Wu which has been established according to his revised theory of thermal transpiration. The classical theory of thermal conductance between coaxial cylinders by Knudsen and Von Smoluchowski is only accurate to the first power of the temperature difference in which the velocity distribution in the system is assumed to be nearly Maxwellian. However, in the present paper, it is unnecessary to make this usual assumption and the exact theory has been established according to the revised theory of thermal transpiration.

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