我翻出来了,
在期刊《Journal of engineering for gas turbines and power》的Vol.124, January 2002的P143页有这么说的
文章名‘influence of a honeycomb facing one the flow through a stepped labyrinth seal'原文如下:
in eq《流量系数=实际流量/理论流量》the leakage mass flow rate m(实际流量) is taken from experiments or the CFD analysis, m(ideal理论流量) stands for a theoretical mass flow for isentropic conditions就是此公式就是国外大部分学者用的那种,有进口、出口压比、流通面积...)