论文部分内容阅读
基于小间隙假设 ,将速度场和应力场采用 Fourier展开式截断近似 ,推导了同心旋转圆柱间 Oldroyd- B型流体的六维动力系统 ,探讨了高分子添加剂对滑动轴承间油膜稳定性的影响 .结果表明 ,少量的高分子添加剂具有推迟流体层流失稳的作用 .
Based on the hypothesis of small gap, the velocity field and stress field are approximated by Fourier expansion. The six-dimensional dynamic system of Oldroyd-B fluid between concentric rotating cylinders is deduced. The effect of polymer additives on the stability of oil film between sliding bearings is discussed. The results show that a small amount of macromolecule additive has the effect of retarding the instability of the fluid laminar flow.