纤维悬浮液搅拌流动的数值模拟  

NUMERICAL SIMULAION OF AGITATED FIBRE-SUSPENSION FLOWS

作　　者：范西俊[1] 范毓润 戴志潜 于鲁强 

机构地区：[1]浙江大学力学系,CAD&CG国家重点实验室

出　　处：《力学学报》1995年第S1期20-29,共10页Chinese Journal of Theoretical and Applied Mechanics

基　　金：国家自然科学基金;化学工程联合实验室聚合反应工程实验室开放基金

摘　　要：由于缺乏适当的本构方程，对纤维悬浮液流动的研究一直局限于纤维的牛顿流体悬浮液。本文采用ＭＵＣＭ模型对作者最近提出的纤维Ｏｌｄｒｏｙｄ－Ｂ流体悬浮液的本构方程作了改进，并对锚式桨搅拌槽的二维Ｏｌｄｒｏｙｄ－Ｂ流体和牛顿流体纤维悬浮液搅拌流动作了数值模拟。模拟的结果表明，本文所用的模型和方法能有效地抑制过大局部应力的影响并合理地处理流体的记忆效应。Because there are no suitable constitutive equations available to describe me-chanical behaviour of fibre suspensions in viscoelastic fluids,research efforts have been so ferlimited to fiber suspensions in Newtonion fluid. The constitutive equation for fibre suspen-sions in the Oldroyd-B fluid is improved by adopting the NUCM model, and 2-D agitatedfibre suspension flows both in the Newtonian and Oldroyd-B fluid are simulated numeri-cally. The results indicate that the model and the numerical method used in this paper caneffectively supress the influence of extra large local stress and properly treat the memoryeffect of the suspensions.

关 键 词：纤维悬浮液 Oldroyd-B流体 流动数值模拟 有限元方法 

分 类 号：O363.1[理学—流体力学]