Further Comparisons of Predicted and Measured Aerodynamic Characteristics of the DLR LK6E2 Missile Airframe (RANS)

Accurate prediction of vortex dominated flows remains a challenge for modern computational fluid dynamics (CFD) solvers. The choice in solver settings has a large influence on flow results and has potential to inaccurately predict complex flows if settings are not thoughtfully chosen. Discussed in this paper is the continuing research of Reynolds Averaged Navier-Stokes (RANS) predictions on the DLR LK6E2 test case as part of the NATO Science and Technology Organization (STO) AVT-390 Task Group, which is a continuation of the AVT-316 Task Group. Results from multiple sensitivity studies are reported including the choice of different modelling assumptions, numerical scheme settings, and the effect of the mesh on the prediction of the DLR LK6E2 missile at the conditions of interest. It has been shown that each of these settings were shown to have a strong influence on the prediction of the rolling moment for this airframe. Additionally, select RANS computations will be compared to available wind tunnel data, where a further detailed discussion of the flow physics of the test case will take place.