摘要
本文在将势函数引进一维不定常等熵流理论的基础上,直接应用二维无旋定常超音速流的特征线方法中的一些结果,推导出一维不定常流的特征线方程,并阐明势函数对时间偏导数的物理意义,最后还推导出一维不定常流的总焓比随马赫数M变化的关系式。
In this,artiele the conception of velocity potential is introduced into unsteadyone-dimensional isentropic flow conseqently,the results which weer derived from themethod of characteristic in two-dimensional steady supersonic flow may be dir-ectly applied to determine properties of the unsteady one-dimensional isentropicflow.The physical explanation of partial derivativeof the velocity potential φwith respect to time t will be given. At the end, the relation between she ratioof stagnation enthalpy and mach number will be found out
关键词
等熵流
势函数
总焓比
马赫数
in unsteady one--dimensional isentropic flow
velocity potent ial
characteristic line
ratio of stagnation enthalpy
Mach number
