EXPERIMENTAL AND NUMERICAL SIMULATION OF A HYPERSONIC AIR INTAKE FOR SCRAMJET ENGINE AND COMPARISON WITH FLIGHT PERFORMANCE

摘要

During the design ami development phase o f the scramjet engines,the aerodynamic performance o f the air-intake was characterized by wind tunnel tests and numerical simulations.The details o f the experimental and numerical studies carried out and their results are presented in this paper.Experiments were carried out at Mach 6 for 1:1 and 1:5 scale air-intake models and 1:6.5 scale clown model intake with fore-body.The air-intake performance is quantified through pressure recovery for different blockages.Wall static pressure on the ramp is measured and found to be ^ood match with the CFD prediction.In order to understand the flow field in the duct both Schlieren and oil flow visualizcition were captured.The match between the pre-flight predictions and the flight measured data is reasonably good.