Calculation of Viscoelastic Flow using Mesh Free Method and Stochastic Simulation
Based on simulation of molecular models of polymeric fluids, a new micro-macro method for numerical calculation of viscoelastic flow is presented in this paper. This method couples the mass and momentum conservation equations at the macroscopic level, with a stochastic differential equation which models the evolution of the polymer configures at the microscopic level. Accordingly, the velocity filed is determined by solving the conservation with a mesh free method, and the stress is computed from the molecular configuration rather than from closed form constitutive equations. Thus this method bypasses the need for a rheological constitutive equation to describe the fluid. In order to validate this method and to demonstrate its robustness, the star-up planar Couette flow is studied for Hookean, FENE and FENE-P dumbbell models.
meshless method Brownian dynamics simulation multiscale method,viscoelastic flow
Zhang Xiaohua Ouyang Jie
Department of Applied Mathematics, Northwestern Polytechoical University, Xian 710072, China
国际会议
郑州
英文
127-136
2006-10-18（万方平台首次上网日期，不代表论文的发表时间）