the correlation of average frictional resistance coefficient is the same with that of no rolling motion.
平均摩擦阻力系数与非摇摆条件下的表达式相同。
meanwhile, the frictional resistance coefficient between particle stream and surrounding fluid which is often obtained by experimentation is one of the most difficult parameter in research.
其中,微粒流与周围流体的摩擦阻力系数的研究是该领域中研究难度较大的课题之一。
the model of laminar flow in tubes in rolling motion is established. the dimensionless correlation of velocity is derived, and the correlation of frictional resistance coefficient is also obtained.
建立了摇摆条件下圆管内的层流流动模型,推导出无量纲化的速度表达式,得到摩擦阻力系数关系式。
the variation of fouling resistance and frictional resistance coefficient of heat exchanger using connate yangtze river water as cooling water is tested experimentally.