Numerical Simulation of Three-Dimensional Boattail Afterbody Flowfields

G. S. Deiwert
1981 AIAA Journal  
The thin shear-layer approximations of the three-dimensional, compressible Navler-Stokes equations are solved for subsonic, transonic, and supersonic flow over axisymmetric boattail bodies at moderate angles of attack. The plume is simulated by a solid body configuration identical to those used in experimental tests. An implicit algorithm of second-order accuracy is used to solve the equations on the ILLIAC IV computer. The turbulence is expressed by an algebraic model applicable to
more » ... able to three-dimensional flowflelds with moderate separation. The formulation used is attractive in its independence of boundary-layer parameters. Such a simple model, however, is incapable of supporting detailed quantitative descriptions of complex shear flows. Nevertheless, good qualitative comparisons are found with three different sets of experimental data. Quantitative improvement will depend on improved turbulence transport descriptions.
doi:10.2514/3.50980 fatcat:ymqvrbgv5jeplichnpnmdx5rkm