摘要
本文分析了Ｒｉｊｋｅ管热声不稳定性的非线性增长过程，通过流体力学中的三个基本守衡方程，得出了管内的声学量之间的关系，并通过采用热声相互作用的非线性关系式和管口声波的非线性反射条件，发展了一种可以计算出管内声波从小扰动增长到大振幅振动直到由于非线性效应的影响而停止增长的全过程的方法，最后实验验证了理论。
in this paper, the nonlinear increasing procedure of thermoacoustical instability in Rijketube is studied. The relations among acoustic variables are obtained by adopting the three cob 3rvativeequations of fluid mechanics. Combining these with the nonlinear equation of thermoacoustic co-relationand nonlinear reflecting condition of sound wave at the end of the tube, a method is developed to computethe increasing procedure of sound wave from little perturbation to large amplitude oscillation until thelimit amplitude saturation is reached. The theory is proved by experiments.
出处
《声学学报》
EI
CSCD
北大核心
1996年第4期362-367,共6页
Acta Acustica
