Backhaus S, Swift G W
Condensed Matter and Thermal Physics Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
J Acoust Soc Am. 2003 Mar;113(3):1317-24. doi: 10.1121/1.1543588.
Thermoacoustic-Stirling hybrid engines and feedback pulse tube refrigerators can utilize jet pumps to suppress streaming that would otherwise cause large heat leaks and reduced efficiency. It is desirable to use jet pumps to suppress streaming because they do not introduce moving parts such as bellows or membranes. In most cases, this form of streaming suppression works reliably. However, in some cases, the streaming suppression has been found to be unstable. Using a simple model of the acoustics in the regenerators and jet pumps of these devices, a stability criterion is derived that predicts when jet pumps can reliably suppress streaming.
热声 - 斯特林混合动力发动机和反馈脉冲管制冷机可以利用喷射泵来抑制气流，否则这些气流会导致大量热泄漏并降低效率。使用喷射泵来抑制气流是可取的，因为它们不会引入诸如波纹管或隔膜之类的运动部件。在大多数情况下，这种气流抑制方式能可靠地工作。然而，在某些情况下，已发现气流抑制是不稳定的。通过使用这些装置的回热器和喷射泵中声学的简单模型，推导出了一个稳定性准则，该准则可预测喷射泵何时能够可靠地抑制气流。
