A simple method for simulating viscoelastic fluid flows in slit channel

作者：Li, Yong^*; Zheng, Jianrong; Zhou, Wei

来源：International Journal of Computational Fluid Dynamics, 2011, 25(6): 355-363.

DOI：10.1080/10618562.2011.603307

• viscoelastic fluid
• slit channel
• the finite piece method
• numerical simulation
• the finite element method

A low-cost semi-analysis finite element technique, named the finite piece method (FPM) is presented in this article. It aims to solve three-dimensional (3D) viscoelastic slit flows. The viscoelastic stress of the fluid is modelled using an K-BKZ integral constitutive equation of the Wagner type. Picard iteration is used to solve non-linear equations. The FPM is tested on flow problems in both planar and contraction channels. The accuracy of the method is assessed by comparing flow distributions and pressure with results obtained by 3D finite element method (FEM). It shows that the solution accuracy is excellent and a substantial amount of computing time and memory requirement can be saved.

• 出版日期2011
• 单位华东理工大学