本文对一种准一维非线性热声模型进行研究,利用该模型初步预测了一种热声驱动器的工作特性,并采用一种更简便的差分格式对系统中发生的非线性现象进行了数值模拟.结果表明,在频域内和线性条件下,该模型简化为经典的线性热声模型,可以预测热声驱动器的起振温度梯度;在时域内和非线性条件下,该模型可以模拟热声系统内的瞬态压力波由初始增长,经过非线性演化,最终达到饱和的全过程;最后,还讨论了板叠上的温度差对饱和压力波的影响.
参考文献
| [1] | N Rott .Damped and Thermally Driven Acoustic Oscillations in Wide and Narrow Tubes[J].Zeitschrift Fur Angewandte Mathematik Und Physik,1969,20:230-243. |
| [2] | G W Swift .Thermoacoustic Engines[J].Journal of the Acoustical Society of America,1988,84(04):1145-1180. |
| [3] | M. Watanabe;A. Prosperetti;H. Yuan .A simplified model for linear and nonlinear processes in thermoacoustic prime movers. Part I. Model and linear theory[J].The Journal of the Acoustical Society of America,1997(6):3484-3496. |
| [4] | H. Yuan;S. Karpov;A. Prosperetti .A simplified model for linear and nonlinear processes in thermoacoustic prime movers. Part II. Nonlinear oscillations[J].The Journal of the Acoustical Society of America,1997(6):3497-3506. |
| [5] | Sergey Karpov;Andrea Prosperetti .A nonlinear model of thermoacoustic devices[J].The Journal of the Acoustical Society of America,2002(4):1431-1444. |
| [6] | J L Achard;G M Lespinard .Structure of the Transient Wall-Friction Law in One-Dimensional Models of Laminar Pipe Flows[J].Journal of Fluid Mechanics,1981,113:283-298. |
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