以超流氦为对象，对其沸腾传热过程中的热声振荡现象进行了研究。
The thermoacoustic oscillation during film boiling heat transfer in superfluid helium is studied.
随着氢气含量的减少，起振临界当量比变大，热声振荡的最大振幅变大。
With reduced the concentration of hydrogen, the oscillation start critical equivalence ratio is higher and the maximum amplitude of thermoacoustic oscillation is larger.
回热器是热机系统的热声源，从外热源吸收热能补偿热机系统的能量耗散，维持系统的热声振荡。
The stack is thermoacoustic source of thermoacoustic engine. It absorbs heat energy from outside heat source to compensate for heat loss of the thermoacoustic engine and keep the engine oscillate.
采用二维九速的格子气模型模拟热声振荡，建立了完备的多体碰撞规则，提供了粘性和热边界的处理方法。
A complete multi-particle collision rule was established, and a method for dealing with viscous and thermal boundary was provided in the present model.
从自激振荡的稳定性入手，分别讨论了热声网络的周期时均和时变数学模型。
Based on the stability of self-oscillation of thermoacoustic engine. models of periodic average and time-varied are investigated respectively.
振荡气体与板叠表面热交换进行声功泵热，系统通过板叠的冷、热端换热器与外界交换热量。
The heat is transferred between the oscillating gas and the surface of the stack and is pumped from the cold to the hot end.
振荡气体与板叠表面热交换进行声功泵热，系统通过板叠的冷、热端换热器与外界交换热量。
The heat is transferred between the oscillating gas and the surface of the stack and is pumped from the cold to the hot end.
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