中文摘要：

采用动网格技术和k-ε两方程湍流模型,通过求解二维非定常不可压雷诺时均NavierStokes方程,对局部壁面振动的管内射流流场进行数值模拟,分析局部振动壁面的振幅和频率对流动的影响.结果表明,射流孔下游壁面静压随振幅、频率的增加而增加;射流孔附近静压在126°相位角降到最低.射流孔的平均流量随振幅的增加而减小,随频率的增加而增加;流量波动随振幅、频率的增加而增大,高频率对主流的影响更加明显.

英文摘要：

The jet flow on vibration wall in tube was simulated based on solving the two- dimensional incomperssible Reynolds averaged Navier-Stokes equation with moving grid and k - ε two-equation turbulence model. The influences of amplitude and frequency of wall vibration on the flow were discussed. The results show that the static pressure on the wall at the jet hole downstream increases with the increase of the amplitude and frequency. The static pressure reaches the lowest under the phase angle of 126 °. The average flow rate of the jet flow decreases with the increase of the amplitude, but increases with the increase of the frequency, and the flow rate fluctuation increases with the increase of the amplitude and the frequency. High frequency has more obvious effects on the mainstream.