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Discussion On the Formulas of Gas Transportation and Hydraulic Frictional Drag Coefficient

??There are many gas trasportation formulas used at present.the difference between the calculated results is very big,as selecting the different frictional drag coefficient formulas.This paper utilizes computer for drawing,studies and compares the C.F.Clebrook formula with various formulas bydrawing method to provide a theoretical basis for selecting gas transportation formula in practice,andproposes corrected flow-state coefficient formula to solve the calculation problems of transporting quantity at mixing friction zone.