声学双作用系统谐振管内部声场研究

Research on Sound Field inside Resonance Tube

针对声学双作用系统中谐振管内部声场进行了试验和理论研究,搭建了谐振管试验平台,测量出了声功损失与输入声功以及谐振管末端针阀气库调节的关系。采用CFD计算软件对谐振管试验平台进行了理论验证,证明了CFD软件在声场模拟上以及声功计算上具有相当高的准确性,对热声系统的性能做出准确的预测,为今后的工作打下了一定的基础。

This paper focuses on the experimental and theoretical research of sound field inside the resonance tube in the thermo acoustical double-acting system. A resonance tube experiment platform is set up, with which the relationship between the acoustic power loss and acoustic power input and the adjustment of the needle valve and reservoir is measured. Besides, the CFD software is employed to simulate the experimental phenomena. It is certified the accuracy of CFD applied in the simulation of sound wave and sound power, indicating the precision of the prediction in the acoustic system. This paper lays a certain foundation for the future work.