流体管道中压力波波速的研究

在充分考虑管道的变形以及液气两相流体体积变化的情况下，根据连续性的原理，推导出泄漏管道中压力波波速的计算公式。分析了气体体积浓度对压力波波速的影响，结果表明气体对压力波波速的影响很大，少量的气体存在就会使压力波波速明显降低。与已有的实验结果进行比较，验证了管道中波速预测公式的准确性和可靠性。

According to the principle of continuity, the pressure wave velocity formula under the pipe deformation and volume change of liquid-gas two-phase in leak pipes was obtained. The influences of the gas volume concentration on the pressure wave velocity were analyzed, results showed that gas had obvious influences on the pressure wave velocity, and small amount of gas there will significantly lower the pressure wave velocity. The results were compared with the experimental results, which verified that the wave velocity prediction formula in pipes was correct and reliable.