03.1 - Aerodynamics – CFD Methods and Validation
NUMERICAL INVESTIGATION OF HYPERSONIC FLOWS
C.-S. Dikmen¹, M.-N. Yüksel¹, M. Yumusak¹; ¹Roketsan, Turkey
The aerothermodynamic effects of high-enthalpy hypersonic flows are considered as vital for hypersonic flow studies. The change between perfect gas flow and chemically reacting flow at hypersonic Mach numbers may be detrimental; therefore, analysts and designers should carefully investigate these changes starting from the basic test geometries. A series of CFD runs are executed using a cylindrical geometry and a double-cone geometry. The results do not only demonstrate the effect of thermochemical changes on the flow field but also how two commercial flow solvers such as ANSYS Fluent and METACOMP CFD++ perform under similar numerical conditions. It is clear that ignoring mentioned effects at critical locations may not be acceptable and flow properties just around the surface of the object and surface loadings may be missed.