圆管层流与湍流进口段效应修正系数的研究

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Study on Correction Coefficients of Laminar and Turbulent Entrance Region Effect in Round Pipe

摘要: 本文对于光滑圆管层流与湍流进口段长度以及压力损失和流量进口段效应修正系数.提出统一的计算方法通过具体算例,提供了层流与湍流进口段效应压力损失和流量修正系数的理论计算公式.并且给出计及湍流进口段效应的流量计算方法.理论计算结果与实验数据比较表明,本文提供的公式.是简便而又可靠的.

Abstract: In this paper, a universal method for calculation of the inlet length and correction coefficient for the pressure losses and the flow in the case of laminar and turbulent flow in a smooth round pipe is put forward.With the aid of concrete examples, theoretical formulas are presented for calculation of the correction coefficient for pressure losses and flow in the case of laminar and turbulent flow. And a method for calculation of the flow is also presented here in consideration of the inlet effect of turbulent flow.By comparing the theoretical results with the experimental data, formulas presented in this paper are very simple and reliable.

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