Comparison of Two Mesh Smoothing Techniques for Unstructured Grids

27th IAHR Symposium on Hydraulic Machinery and Systems

Falsafioon, Mehdi^1 ; Arabi, Sina^1 ; Camarero, Ricardo^1 ; Guibault, Francois^1

Department of Mechanical Engineering, École Polytechnique de Montréal, PO Box 6079, Montréal

QC

H4T 1J4, Canada^1

关键词: Elliptic equations;    Finite volume schemes;    Global quality;    Mesh smoothing;    Quality measures;    Shape factor;    Unstructured grid;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/22/2/022020/pdf
DOI  :  10.1088/1755-1315/22/2/022020

来源: IOP

【 摘 要 】

In this paper two mesh smoothing techniques are applied to unstructured grids. These are based on the solution of elliptic equations, Laplace and Winslow. In the first case, the equations are solved by a barycentric averaging procedure, and a finite volume scheme is used for the second operator. The comparison of these two techniques are based on two quality measures, shape factor and minimum angle which both are local criteria. Also, a global quality smoothness criterion is introduced and used to assess global smoothing characteristics of these methods.