Influence of the Collector on the Experimental Matching of Chamber Pressure in High Temperature Gas Flow Wind Tunnel
Aiming at the damage problem of experimental facilities caused by unsteady chamber pressure in experiment of high temperature gas flow wind tunnel,the mechanism of the influence of collector positions and dimensions on the stability of experimental flow field is studied.Study mainly focuses on the interaction between the waves and separated vortexes.Utilizing CFD method,the pressure distribution is obtained in the chamber.Then the relationship between the interaction of the waves and separated vortexes and experimental stability are also explored,which will provide a reference for the optimal design of the collector.The results show that appropriate collector position and reasonable collector dimensions can reduce the overflow in the chamber.It can also avoid the separated vortex dominating the collector port,and increase the flow of mainstream.It is helpful to the conduction of experiment.
high temperature wind tunneldiffusercollectorchamber pressureinteraction between waves and vortexes
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