... 相对机率 relative probability 相对粗面 relative roughness 相对游离比度 relative specific ionization ...
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relative roughness factor 相对粗糙度
critical relative roughness 临界相对粗糙度
equivalent relative roughness 当量相对粗糙度
relative roughness of pipe 管壁当量粗糙度
relative roughness of height 肋高比
Roughness relative 相对糙率
relative e roughness 相对糙度
relative surface roughness 相对表面粗糙度
Because of the decreased characteristic length and the growth of relative roughness, friction of surface increase and flow-rate decrease. Experiment research proved the water flow rules with diamter 20μm.
由于特征尺度的减小,管道表面相对粗糙度的加大,壁面处将会产生涡流,从而增大摩擦阻力,减小管道内液体流量。
参考来源 - 压力驱动微管道液体流动数值模拟与实验研究·2,447,543篇论文数据,部分数据来源于NoteExpress
The roughness coefficient increases when the relative roughness of the surface becomes larger under the same condition of discharge.
对于不同粗糙程度的壁面,在同一流量条件下的糙率系数会随着相对粗糙度的增大而增大。
The friction factor obtained from the experiments increases with the surface roughness increase when the relative roughness is greater 1%.
实验结果表明当壁面粗糙度超过1%时摩擦系数随着壁面相对粗糙度的增加而增加。
Since if the frictional resistance coefficient is a function of relative roughness, then the form resistance coefficient is independent of the Reynolds number.
若流线型物体表面的摩擦阻力系数仅为相对粗糙度的函数,则形状阻力系数与雷诺数无关。
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