Numerical investigation of aerodynamic uncertainties caused by turbulence modeling for missile type of geometries in supersonic flow

Date

2023-7-21

Author

Durmuş, Salih Kağan

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Uncertainties in aerodynamic databases constructed by performing Computational Fluid Dynamics (CFD) simulations are one of the key parameters that drives aerodynamic measurements to be done and the necessity for validation of CFD results with the experiments. In this study, the steady-state Reynolds-Averaged Navier Stokes (RANS) simulations are performed for two generic missile geometries in supersonic flow and the uncertainties caused by turbulence modeling are investigated for the aerodynamic performance analysis. Uncertainties in the axial force coefficient, normal force coefficient and the pitching moment coefficient are calculated using the open-source SU2 CFD solver with the EQUiPS module. Findings demonstrated that the uncertainty bounds for the solution obtained with the SST model are in close agreement with the experimental data. In addition, Mach contour plots for both of the generic geometry cases provided similar results with the literature, in terms of shock positions and flow separation regions.

Subject Keywords

Uncertainty, Supersonic flow, Computational fluid dynamics (CFD), Reynolds-averaged navier stokes (RANS), Missile aerodynamics

URI

https://hdl.handle.net/11511/105099

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Graduate School of Natural and Applied Sciences, Thesis