Numerical Computation of Pressure Distributions over Conical Forebody at High Angles of Attack
نویسندگان
چکیده
Pressure distributions over a 20° conical forebody are computed by the commercial CFD software ANSYS CFX. Free stream velocity is 30 m/s, Reynolds number based on the forebody base diameter is 0.3×10 6 , and the angle of attack ranges from 10° to 35°. The C-O structural grids are used to compute the entire flow field. The governing equations are steady Reynolds-Averaged Navier-Stokes Equations for turbulent flow, and steady NavierStokes equation for laminar flow. Different grids are investigated at the angle of attack of 35° for turbulent flow. The grid of 161×121×360 (axial × radial × circumferential) is chosen by the consideration of grid independence. The numerical solutions are compared with experimental data available in the literatures. The numerical results using laminar NavierStokes equations compare favorably with experimental measurements and the computation of transitional Navier-Stokes equations is required.
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