Compressible and Viscous Effects in Transonic Planar Flow around a Circular Cylinder—A Numerical Analysis Based on a Commercially Available CFD Tool

Transonic planar flows around a circular cylinder are investigated numerically for laminar and turbulent flow conditions with Reynolds numbers of 50≤ReD≤300 8890≤ReD≤ 80,000 free stream Mach in the range 0.2≤Ma∞≤2. A commercially available CFD tool is used validated this purpose. The results show that phenomena occurring can be grouped into eight regimes. Compared to incompressible regimes, several new found. In contrast, at higher Ma∞ 0.6≤Ma∞≤0.8 vortices wake suppressed ReD=50. some cases, Ma∞=0.8 ReD≥300, λ-shocks formed near wake. For supersonic Ma∞, two different observed. Beside well-known oblique detached shocks, instabilities downstream cylinder. Furthermore, temporal mean drag coefficient C¯D, Strouhal number Str, as well critical Macrit calculated from simulation interpreted.