Numerical simulation of 2D airfoil flow in high Reynolds number based on Cartesian grid wall function method

被引：0
|
作者：
Liu J. [1 ]
Duan W. [1 ]
Liao K. [1 ]
Zhang Y. [1 ]
Li D. [1 ]
机构：
[1] College of Shipbuilding Engineering, Harbin Engineering University, Harbin
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2023年 / 44卷 / 06期
关键词：
airfoil flow; Cartesian grid; finite difference method; high Reynolds number; immersed boundary method; pressure coefficient; skin-friction coefficient; wall function;
D O I：
10.11990/jheu.202109014
中图分类号：
学科分类号：
摘要：
The traditional Cartesian grid method cannot accurately calculate the flow field and shear stress in the near wall region under a high Reynolds number. Hence, a wall function method is adopted to simulate the high Reynolds number airfoil flow using the two-dimensional Cartesian grid independent development CFD solver. N-S equations are discretized on a Cartesian grid based on the finite difference method, and the accuracy of the present flow solver reaches the second order in space and time dispersion. The accuracy and reliability of the present solver are verified by simulation of the flow around the cylinder and the airfoil under a low Reynolds number. The velocity profile near the wall is modified using the wall function at a high Reynolds number, and the velocity distribution near the wall is found to be consistent with the actual flow field. The results show that the present method can accurately solve the 2D airfoil flow under a high Reynolds number. The commercial CFD software Star-CCM+ is also used to simulate the same problem with a body-fitted grid, and the findings show that the grid requirement of the present method is larger than that of the body-fitted grid. © 2023 Editorial Board of Journal of Harbin Engineering. All rights reserved.
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页码：895 / 902
页数：7
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