MATHEMATICAL MODELING OF AERODYNAMICS OF A HIGH-SPEED GROUND VEHICLE

Abstract

Reliable prediction of the characteristics of turbulent flows is an extremely important scientific problem due to the complexity and insufficient study of turbulence as a physical phenomenon. Today, computational aerodynamics lacks universal mathematical models of turbulence This paper considers the problem of modeling the aerodynamics of a high-speed ground vehicle. The Reynolds-averaged Navier-Stokes equations are used to describe the flow around the vehicle. To close the Reynolds-averaged Navier-Stokes equations, a two-parameter SST Menter turbulence model was used. The SST Menter model is superior in quality to a number of other turbulence models, but in terms of computational simplicity and costs it is inferior to models with a single equation. A methodology, algorithm for solving the problem, and software have been developed. The finite-volume method was used to numerically integrate the system of differential equations. The problem was solved in a multi-block formulation. The developed methodology was tested on standard aerodynamic problems.