Figure 4
Numerical computations for the reference case: (a) the flow field past the sphere depicted by velocity vectors; (b) the temperature field in the gas stream surrounding the sphere as illustrated by isotherms. = 7.2 K. The velocity field shows the flow separation and the large recirculation region downstream of the sphere. Note that the thermal field and temperature gradients immediately before and after the sphere are considerably different owing to the presence of this large wake. |