A quantitative study of grid sensitivity on transonic Navier-Stokes solutions

Singh, JP (1996) A quantitative study of grid sensitivity on transonic Navier-Stokes solutions. In: Proceedings of the 3rd International Symposium on Experimental and Computational Aerothermodynamics of Internal Flows, 1-6 Sept 1996, Beijing, China.

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Abstract

The paper describes the results of a quantitative study of grid sensitivity on the Navier-Stokes solutions of transonic flows. The study is conducted using a well-tested compressible 2D Navier-Stokes solver. The flow is computed using several grids generated using a standard algebraic C-grid generator with the following grid parameters varying: grid size, grid distance near the body, far field location, and resolution in leading and trailing edge areas. Using these grids, the transonic flow over RAE 2822 corresponding to Case 9 of the AGARD experimental data set is simulated. The present study shows that the computed flow is sensitive to the above-mentioned grid parameters, most significantly on the location of the first grid line around the airfoil. It also seems to suggest a minimum quantitative property of the grids to be used for a satisfactory flow simulation.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Algebraic C-grid generator;Airfoil
Subjects: ASTRONAUTICS > Spacecraft Design, Testing and Performance
Division/Department: Computational and Theoretical Fluid Dynamics Division
Depositing User: M/S ICAST NAL
Date Deposited: 19 Sep 2006
Last Modified: 24 May 2010 09:50
URI: http://nal-ir.nal.res.in/id/eprint/2767

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