A Stable Lattice Boltzmann Method for Steady Backward-Facing Step Flow

被引：0
作者：
Ahad Zarghami
Negar Ahmadi
机构：
[1] Islamic Azad University,Department of Engineering, Science and Research Branch
来源：
Arabian Journal for Science and Engineering | 2014年 / 39卷
关键词：
LBM; Weighting factors; FV; Backward-facing step; Bifurcation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The severe problem of the most lattice Boltzmann methods (LBM) is the instability within the solution. This paper presents the implementation and applicability of a stable finite volume (FV) formulation of LBM for simulating steady separating and reattaching flow pasts backward-facing step geometry. For simulation purpose, a cell-centered scheme is implemented to discretize the convection operator and new weighting factors are used as flux correctors. Compared with previous FV formulations, a remarkable stability improvement is achieved and the secondary recirculation region is clearly captured for Reynolds numbers higher than 400. The simulation results show good agreement with benchmark data, which demonstrate the trustworthiness of the scheme.
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页码：6375 / 6384
页数：9
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