Heat Transfer During Thermal Acoustic Oscillations in Cryogenic Systems

插入低温系统的管道中的热声振荡通常会将大量的热量引入这些系统。这种不需要的热泄漏会严重降低低温流体的长期储存。在这些振荡过程中，对传热过程进行理论分析的工作很少。本研究的目的是对低温系统，特别是液氦和液氢系统中的热声振荡进行数值分析和模拟，预测振荡的压力振幅、速度和温度分布，最后通过实验将与这些振荡相关的传热联系起来。

Thermal acoustic oscillations in tubes inserted into cryogenic systems can often introduce large quantities of heat into these systems. Such unwanted heat leaks can seriously degrade long term storage of cryogenic fluids. Very little has been done to develop a theoretical analysis of the heat transfer process during these oscillations. The objective of the proposed research is to numerically analyze and stimulate thermal acoustic oscillations in cryogenic systems, particularly in liquid helium and hydrogen systems, predict the oscillation pressure amplitude, velocity and temperature profiles and finally, experimentally correlate the heat transfer associated with these oscillations.