On the use of momentum and kinetic energy tubes for analyzing transport phenomena in a supersonic ejector

Abstract

This work aims at providing novel insights into the entrainment and energy exchange phenomena within a supersonic ejector. To this end, advanced analysis tools based on momentum and energy tubes (Meyers and Meneveau [1]) are extended to the compressible nature of the flow and applied to the transport and mixing phenomena within the ejector. New indicators of mixing are introduced in order to investigate quantitatively transfer between the primary and the secondary streams all along the ejector. It is shown that there is no analogy between the transfer of momentum and the gain in exergy of the secondary stream.