Visualization of Secondary Flow Choking Phenomena in a Supersonic Air Ejector

Article type: Research Article

Authors: Desevaux, P. | Mellal, A. | Alves de Sousa, Y.

Affiliations: CREST/CNRS - UMR 6000, University of Franche-Comté, IGE, Parc Technologique, F-90000 Belfort, France. E-mail: philippe.desevaux@univ-fcomte.fr

Abstract: The present study deals with the visualization of the air flow inside a supersonic ejector. Our attention is more precisely focused on the choked flow phenomenon which occurs along the mixing chamber of the secondary nozzle and which can be visualized by CFD. Laser tomography visualizations are used to validate the CFD model. The evolution of flow configuration in the ejector with the primary stagnation pressure is examined both in the case of zero secondary flow and in the case of free entrainment of induced air.

Keywords: Ejector, Supersonic Flow, Shocks, Numerical Simulation, Laser Tomography

Journal: Journal of Visualization, vol. 7, no. 3, pp. 249-256, 2004