CFD study on Taconis thermoacoustic oscillation with cryogenic hydrogen as working gas

被引：18

作者：

Sun, Darning ^{[1
,2
]}

Wang, Kai ^{[1
,2
]}

Guo, Yinan ^{[1
,2
]}

Zhang, Jie ^{[1
,2
]}

Xu, Ya ^{[1
,2
]}

Zou, Jiang ^{[1
,2
]}

Zhang, Xiaobin ^{[1
,2
]}

机构：

[1] Zhejiang Univ, Inst Refrigerat & Cryogen, Hangzhou 310027, Zhejiang, Peoples R China

[2] Key Lab Refrigerat & Cryogen Technol Zhejiang Pro, Beijing, Peoples R China

来源：

CRYOGENICS | 2016年 / 75卷

基金：

中国国家自然科学基金;

关键词：

Taconis; Thermoacoustic; Standing wave; Traveling wave; CFD; DRIVEN ACOUSTIC-OSCILLATIONS; ONSET CHARACTERISTICS; NUMERICAL-SIMULATION; ENGINES; HELIUM;

D O I：

10.1016/j.cryogenics.2016.01.004

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Taconis oscillation is a kind of typical self-excited thermoacoustic oscillation, the study of which is of great significance to reveal the thermoacoustic conversion effect and find ways to suppress self-excited oscillation in cryogenic systems. Based on computational fluid dynamics (CFD) method, the onset process of Taconis oscillation with low temperature hydrogen at atmospheric pressure as working gas is first simulated. It is shown that a standing-wave acoustic field operating at 91 Hz starts spontaneously and finally develops to a saturation state in the Taconis tube with length and inner diameter of 1 m and 0.01 m respectively. Parametric variations in both axial and radial directions of thermoacoustic field are then studied in detail. By combining the computational results with Rott's theory, the spatial distributions of viscous dissipation, thermal relaxation dissipation, and source/sink terms of Taconis thermoacoustic oscillation are obtained quantitatively. The dissipation and source terms are found to be mainly brought forth by the traveling-wave and standing-wave components of the acoustic field, respectively. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：38 / 46

页数：9

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