数学模型在流体阻力测定中的应用

Mathematic Model Applying in the Measure of Fluid Resistance

在流体阻力测定实验中 ,确定直管摩擦系数时 ,对不同的实验装置 ,将流速与压差间的关系用线性回归法求得经验公式 ,以便用孔板流量计两端的压差读数R直接计算出流体的流速 μ 。

The paper is intended to define the friction-coeffici ent of straight-tu be,and to establish a expecience formula by means of linear regress,so we can ca lculate the flow rate by difference of pressure directly,it makes the calculatio n and expdriment more simplify.