Thermoacoustics of solids: A pathway to solid state engines and refrigerators
Thermoacoustics of solids: A pathway to solid state engines and refrigerators
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DOI：
10.1063/1.5006489
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发表时间：
2017-08
影响因子：
3.2
通讯作者：
H. Hao;C. Scalo;M. Sen;F. Semperlotti
中科院分区：
文献类型：
--
作者：
H. Hao;C. Scalo;M. Sen;F. Semperlotti
Thermoacoustic oscillations have been one of the most exciting discoveries of the physics of fluids in the 19th century. Since its inception, scientists have formulated a comprehensive theoretical explanation of the basic phenomenon which has later found several practical applications to engineering devices. To date, all studies have concentrated on the thermoacoustics of fluid media where this fascinating mechanism was exclusively believed to exist. Our study shows theoretical and numerical evidence of the existence of thermoacoustic instabilities in solid media. Although the underlying physical mechanism exhibits some interesting similarities with its counterpart in fluids, the theoretical framework highlights relevant differences that have important implications on the ability to trigger and sustain the thermoacoustic response. This mechanism could pave the way to the development of highly robust and reliable solid-state thermoacoustic engines and refrigerators.
