High-Density Mesh Flow Computations by Building-Cube Method
In this paper, an approach named Building-Cube Method, aimed for largescale computation on near-future advanced parallel computers, was applied to flow computations of two airfoils; RAE2822 airfoil at transonic speed and four-element airfoil at low Mach number. The method is based on the Cartesian mesh, and the local grid density is adapted to the flow characteristic length by changing the cube size. Equal spacing and equal number of Cartesian grid in each cube make it easy to parallelize the flow solver and to handle huge data output. The computed results showed detailed flow features near the airfoil surfaces owing to the high-density and isotropic mesh. The pressure coefficient distributions of the time-averaged result of the four-element airfoil showed good agreement with the experiment data. It is interesting that, with the high-density and isotropic mesh, the computations without turbulence models show reasonable results.
KeywordsAirfoil Surface Cartesian Mesh Cube Size MUSCL Scheme Transonic Speed
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