Numerical Simulation of Sudden Contraction Flow for Viscoelastic Fluids with the Lattice Boltzmann Method

被引：0

作者：

Yao, Qing ^{[1
]}

Zhou, Wang-Jun ^{[1
]}

Li, Yong ^{[1
]}

He, Lu-Wu ^{[1
]}

机构：

[1] East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

来源：

PROCEEDINGS OF THE 3RD ANNUAL INTERNATIONAL CONFERENCE ON MECHANICS AND MECHANICAL ENGINEERING (MME 2016) | 2017年 / 105卷

基金：

中国国家自然科学基金;

关键词：

LBM; Viscoelastic fluid; Sudden contraction flow; Reynolds numbers Re; Viscosity v(s); Weissenberg numbers Wi; BGK MODEL; NUMBERS;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, based on the lattice Boltzmann method (LBM) and the Oldroyd-B model, the decoupled solving method for the incompressible Navier-Stokes equation and advection-diffusion constitutive equation and the boundary processing formats are given. The flow of viscoelastic fluid in the planar 3: 1 contraction channel is simulated. For different Reynolds numbers Re, Weissenberg numbers Wi and viscosity v(s), the streamline patterns, the positions of vortex center and the length of vortex are obtained, and the influences of these parameters on flow behavior are discussed. The numerical results also present that the decoupled solving method is feasible and the LBM has fine accuracy and stability.

引用

页码：987 / 993

页数：7

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