Development of a flow field structure in the vicinity of a circular cylinder in the presence of a laminar-turbulent transition

The Reynolds equations and the two-parameter differential $q$–$\omega$ model of turbulence are used to investigate a flow past a circular cylinder with an isothermal surface (temperature factor $T_{w0}=0.5$) at the Mach number Маха $\mathrm{M}_\infty=5$ in the range of Reynolds numbers $\mathrm{Re}=10^4-10^8$. It is demonstrated that the turbulization of flow leads to a shift of the separation point downstream, a reduction and stabilization of the separation zone length, a decrease in the maximum velocity in the separation zone, and an increase in the heat flux at the rear stagnation point compared with its value at the forward stagnation point.