Flow emerging from annular-conical nozzle combinations and impinging onto a cylindrical cavity

Flow emerging from a combination of annular and conical nozzles and impinging onto a cylindrical cavity at elevated all temperature is considered, and the flow field and heat transfer rates from the cavity are computed. In the simulations, two cavity depths and four average jet velocities at nozzle exit are accommodated. Reynolds Stress Turbulence model is introduced to account for the turbulence. Air is used as working fluid while steel is considered as the cavity material. It is found that the Nusselt number attains high values in the neighborhood of the stagnation zone at the cavity bottom surface, which is more pronounced for 1 mm depth cavity.