Simulation of turbulent flow around a tear-shaped body with a tapered flare

The axisymmetric flow around a tear-shaped body with a flare is analyzed by solving the continuity equation, Reynolds equations (closed with the Menter model of shear stress transport), and energy equation. In the solution, a factorized multiblock finite-volume technique embedded in a VP2/3 program package is used. Numerical estimates are compared with aeroballistic tests of a model. Direct-shadow flow patterns are recorded and the trajectory parameters are calculated with the aim of determining the aerodynamic drag at a close-to-zero angle of attack. Interferograms of the axisymmetric flow around the body (M = 4.35) are also taken. The calculated and experimental data for the flow density transverse (radial) distribution are in good agreement. Agreement between the calculation and experiment in the drag coefficient at a close-to-zero angle of attack is also observed.