【摘要】 在长4.8m、截面为60mm×60mm的卧式激波管中,进行激波与火焰相互作用过程的实验研究。利用YA16高速摄影仪拍摄了该过程的照片,显示了激波作用下火焰的失稳、变形和破碎。基于带化学反应的NavierStokes方程和有关热力学和反应动力学数据,利用改进的VLS格式,对该过程进行了数值模拟。根据实验和数值计算结果,讨论了火焰稳定性和漩涡生成机理,且理论计算与实验结果较为一致。更多还原

【Abstract】 Using a horizontal shock tube of 4.8m length and 60mm×60mm section area, experiments on the interaction of shockwave and flame were performed and some shadowgraphs were successfully acquired by a YA-16 high-speed camera. The shadowgraphs showed the instability, distortion and breakup of the flame. Based on the Navier-Stokes equations coupled with the chemical reaction terms, some relevant thermodynamic and kinetic data and modified Van Leer splitting scheme, the interaction process of the shock wave and the flame was simulated. From the results, the flame stability and the mechanism of vortex formation were discussed. The experimental results were in good agreement with the calculated results.更多还原