Karpov Sergey, Prosperetti Andrea
Department of Mechanical Engineering, The Johns Hopkins University Baltimore, Maryland 21218, USA.
J Acoust Soc Am. 2002 Oct;112(4):1431-44. doi: 10.1121/1.1501277.
This paper presents a nonlinear, time-domain model of thermoacoustic devices based on cross-sectional averaged equations. Heat transfer perpendicular to the device axis--which lies at the core of thermoacoustic effects--is modeled in a novel and more realistic way. Heat conduction in the solid surfaces surrounding the fluid medium is included. Contrary to the previous versions of this model [Watanabe et al., J. Acoust. Soc. Am. 102, 3484-3496 (1997)], the present version does not require artificial damping and is numerically robust. The model performance is illustrated on several examples: a prime mover, an externally driven thermoacoustic refrigerator, and a combined prime mover/refrigerator system.
本文基于横截面平均方程提出了一种热声装置的非线性时域模型。垂直于装置轴线的热传递——这是热声效应的核心——采用了一种新颖且更符合实际的方式进行建模。该模型考虑了流体介质周围固体表面的热传导。与该模型的先前版本[渡边等人，《美国声学学会杂志》102, 3484 - 3496 (1997)]不同，当前版本不需要人工阻尼且在数值上具有鲁棒性。通过几个示例展示了该模型的性能：一个原动机、一个外部驱动的热声制冷机以及一个原动机/制冷机组合系统。
