A Parametric Study of the Dump Diffuser Flow

The dump diffuser produces a stable flow pattern under a wide range of operating conditions. Many experimental and numerical studies have been reported on dump diffuser flows with tremendous insight on critical flow features. Nevertheless, the design optimization of dump diffuser is still an emerging field in the modern aircraft industry. Towards meeting the design objectives, using a two-dimensional standard k-e turbulence model, in this paper parametric studies have been carried out to examine the flow features through a straight-walled pre-diffuser with a dump.