Computation of heat flux in the stagnation point for a cold wall with high speed flow

Abstract eng:
In order to get the exact heat flux in the stagnation point numerically, direct numerical simulation (DNS) is performed to solve Navier-Stokes equations for hypersonic blunt cone flow with Mach numbers 4.5, 6 and 8. The convective terms are calculated using fifth order WENO schemes. To study how the parameter properties affect the stagnation heat flux, the comparisons were given between constant and variable specific heat ratio taken respectively. The basic flow is obtained at isothermal wall condition and then the heat flux in the stagnation point by Fourier heat conduction law. We also compute and analyze the proportions of various kinds of items in the energy equation at different point on the axis. Basing on this, we manage to develop a method to get the stagnation point heat flux by virtue of calculating some item such as convective heat transfer.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket