Issues on grid convergence

摘要：

Two factors that affect grid convergence were investigated, critical grid spacing and distribution characteristics of grid. A formula involved order and Reynolds number was presented to judge whether the contribution of viscosity term can be reckoned in. It was deduced from the formula that used to estimate the critical grid spacing when uniform grid is adopted. Uniformity, length-to-width ratio and orthogonality were investigated to analyze the impact of distribution characteristics for non-uniform grid. Referring to Roaches GCI (Grid Convergence Index), an approach for high dimension and mix-order problems is employed to measure the grid convergence based on error. A case of 2-D flows around square cylinder was used to verify above issues.

关键词： grid convergence grid spacing distribution characteristic of grid GCI square cylinder

作者: T.Wang Q.S.Guo

作者单位: Academy of Armored Force Engineering, Beijing, 100072 China

会议类型: 国际会议

会议名称: The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)

会议地点: 上海

会议语种:英文

在线出版日期: 2007-08-15（万方平台首次上网日期，不代表论文的发表时间）