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.
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Philippe Desevaux: He is an Assistant Professor at the University of Franche-Comté. He received his Ph.D. degree in Engineering Sciences from the University of Franche-Comté in 1994. His research interests are in the field of fluid dynamics and include the development of new investigation techniques and their application to the solution of problems for aerodynamics, hydrodynamics and two-phase flows.
Alaoui Mellal: He received his M.S. degree in Mechanical Engineering in 2003 from the Scientific and Technical University of Rouen (INSA). He is now working on ejector applications and experimental investigation of supersonic flows by laser tomography visualization.
Yann Alves De Sousa: He received his M.S. degree in Mechanical, Energy and Environmental Engineering in 2003 from the University of Franche-Comté. His research interests are in the area of computational fluid dynamics, and more particularly concerning the modelling of internal supersonic flows and shock waves.
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Desevaux, P., Mellal, A. & Alves de Sousa, Y. Visualization of secondary flow choking phenomena in a supersonic air ejector. J Vis 7, 249–256 (2004). https://doi.org/10.1007/BF03181640
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DOI: https://doi.org/10.1007/BF03181640