| 同心旋转圆柱间粘弹性流的非线性动力学模型 |
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| 引用本文： | 王海林,张青雷.同心旋转圆柱间粘弹性流的非线性动力学模型[J].摩擦学学报,2000,20(4):296-299. |
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| 作者姓名： | 王海林 张青雷 |
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| 作者单位： | 西安交通大学,润滑理论与轴承研究所,陕西,西安,710049 |
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| 基金项目： | 国家自然科学基金资助项目! ( 1 9990 51 0 ) |
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| 摘 要： | 基于小间隙假设，将速度场和应力场有杉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。
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| 关 键 词： | 粘弹性流 动力学模型 稳定性 湍流减阻 润滑剂 |
Nonlinear Dynamic Model for Visco-elastic Flow between Concentric Rotating Cylinders |
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| WANG Hai lin,ZHANG Qing lei,ZHU Jun.Nonlinear Dynamic Model for Visco-elastic Flow between Concentric Rotating Cylinders[J].Tribology,2000,20(4):296-299. |
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| Authors: | WANG Hai lin ZHANG Qing lei ZHU Jun |
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| Abstract: | A six dimensional dynamical system for Oldroyd B flow between two concentric cylinders is derived in the narrow gap limit by a truncation of the flow field and stress. The effects of polymer additives on the flow stability are analyzed. The results show that a small amount of polymer additives can delay the transition from laminar flow to turbulence and the effect of polymer additives on the flow stability of the fluids is closely related to the concentration of the additive therein. |
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| Keywords: | visco elastic fluids dynamical model stability drag reduction lubricant |
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