Newton fluid's flowing in special pipe is analysed, it is gained that some factors affect the frictioncoefficient of flowing fluid in special pipe.
主要通过对流体流过非圆形直管的流动分析，得到影响非圆形直管摩擦系数的因素。
2
Finally the engineering design suggestion of three commonly used diameter pipe segments is given through changing their length and the frictioncoefficient between the slip block and the soil surface.