Abstract: | Some results are presented of experimental studies of the equilibrium temperature and heat transfer of a sphere in a supersonic rarefied air flow.The notations D
sphere diameter
- u, , T,,l,
freestream parameters (u is velocity, density, T the thermodynamic temperature,l the molecular mean free path, the viscosity coefficient, the thermal conductivity)
- T0
temperature of the adiabatically stagnated stream
- Te
mean equilibrium temperature of the sphere
- Tw
surface temperature of the cold sphere (Twe)
-
mean heat transfer coefficient
- e
air thermal conductivity at the temperature Te
- P
Prandtl number
- M
Mach number |