Thermoacoustic relaxation in a pin-array stack
Journal Article
·
· Journal of the Acoustical Society of America
- Condensed Matter and Thermal Physics Group, Los Alamos National Laboratory, MS K764, Los Alamos, New Mexico 87545 (United States)
The pressure response p{sub 1} of a fixed quantity of {sup 4}He gas subjected to sinusoidal volume perturbations is studied experimentally. Thermal diffusion near solid boundaries causes the gas response to be neither adiabatic nor isothermal. The data are interpreted in terms of the thermal relaxation function f{sub {kappa}} which relates p{sub 1} to the spatial average of the acoustic temperature profile. Comparison of a number of geometries allows us to accurately determine f{sub {kappa}} for a thermoacoustic pin-array stack. {copyright} {ital 1997 Acoustical Society of America.}
- OSTI ID:
- 553983
- Journal Information:
- Journal of the Acoustical Society of America, Vol. 102, Issue 5; Other Information: PBD: Nov 1997
- Country of Publication:
- United States
- Language:
- English
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