摘要
应力偶流体是一种粘性介质,其中悬浮着刚性的、随机排列的粒子,在科学和工程技术、医疗临床中具有广泛的应用背景和现实意义。本文采用逆方法研究并获得了应力偶流体的定常和非定常精确解。所得结果表明应力偶流体运动特性不仅依赖于物质粘性常数,而且强烈地依赖于应力偶流体特有的与固体颗粒尺度有关的物性常数。这些精确解为实验,数值以及渐近解的检验提供了借鉴和参考。
Couple stress fluids are the fluids consisting of rigid,randomly oriented particles suspended in a viscous medium,which have been widely used in scientific,industrial and clinical fields.By using inverse method,the analytical solutions of couple stress fluids were obtained for steady and unsteady cases.The results show that the couple stress fluid flow behavior depends on not only the coefficient of viscosity,but also the material constant responsible for the couple stress parameter.The exact solutions are analytical physical solutions and can be served as accuracy checks for experimental,numerical and asymptotic methods.
出处
《力学季刊》
CSCD
北大核心
2010年第2期159-164,共6页
Chinese Quarterly of Mechanics
基金
安徽省高校优秀青年人才基金重点项目(2010SQRL026ZD)
安徽高校省级科学研究项目(KJ2010A130)
安徽师范大学博士科研启动基金(160751013)
关键词
应力偶流体
逆方法
非牛顿流体
couple stress fluid
inverse method
non-Newtonian fluid
