Navier-Stokes analysis of vortex flow over a cropped delta wing

The vortex flow over a 65° cropped delta wing with round leading edge, atM∞=0.85 and Re∞=2.38×106, has been analyzed for 10°, 20°, and 30° angles of attack. A vertex based finite volume code, JUMBO3D, with an algebraic turbulence model has been used to solve the Reynolds Averaged Navier-Stokes (RANS) equations. An H−O type grid generated by a hybrid elliptic-algebraic method has been used here, and a significant improvement of the results over an O−O type grid has been obtained. The results are compared with available experimental data. The complex physical phenomena due to interactions among the primary, secondary, and tertiary vortices, cross-flow and terminating shocks, and turbulent boundary layer, as visualized from the numerical solutions obtained are presented and discussed here.