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Grid independence in the study of boundary layer and its application in Hypergolic Propellants

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Abstract

Numerical simulation and experimental validation of a hypersonic flat plate and isothermal turning wall flow were conducted in the current study. The investigation was based on three kinds of grids (Grid1, Grid2, and Grid3) with laminar flow and three types of turbulence models (BL, SA, and SST). Under the same initiation and different turbulence models, the convergence process of the friction drag coefficient CP and the Stanton number St of a hypersonic flat plate flow revealed four results. First, the flow turbulence effect in the BL model simulation was responsive to CP and St. Second, the SA and SST model simulations both reflected the development process of flow turbulence. Third, the flow turbulence effect in the SST model simulation did not gradually emerge until the laminar flow simulation was sufficient. Moreover, the SA model simulation did not exist on such obvious hysteresis. Fourth, by comparing CP and St of a hypersonic flat-plate laminar simulation under the three grids, the errors of the calculation results of Grid2 and Grid3 were small.

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Correspondence to Sung-Ki Lyu.

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Xiao, H., Xu, ZZ., Li, Dy. et al. Grid independence in the study of boundary layer and its application in Hypergolic Propellants. Int. J. Precis. Eng. Manuf. 17, 887–895 (2016). https://doi.org/10.1007/s12541-016-0108-7

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  • DOI: https://doi.org/10.1007/s12541-016-0108-7

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