Abstract
Turbulent flow simulations aimed at improving the capability of representing launch-vehicle aerodynamics are presented. A three-dimensional finite difference numerical code, written for general, curvilinear, body-conforming coordinate systems, is used. Simulations of turbulent flows over a flat plate are compared to theoretical and empirical results in order to assess the correctness of the implementation of the formulation. Transonic and supersonic turbulent flows are then simulated over the Brazilian satellite launch-vehicle configuration. Two eddy viscosity turbulence models are chosen for this numerical method, considering single- and two-equation closures. These two closures, namely, the Spalart-Allmaras single-equation model and Menter's shear-stress-transport two-equation model, have been natively developed for aerospace applications. In general, good results within engineering error margins are obtained with the method presented here.
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