Abstract
AbstractBlockage of strut injector in a supersonic blowdown wind tunnel was studied numerically. Blockage of a model depends mainly on model cross-sectional area, Mach number, shockwave boundary layer interaction, displacement of the boundary layer, and total pressure loss. Simulations were carried out for Mach number of 2 for different chamber pressures while keeping all the other parameters fixed. The blockage phenomenon was simulated using commercial software ANSYS Fluent with SST K-\(\omega \) turbulence model. Results showed that increasing the chamber pressure did not help in avoiding blockage. Flow field was also not affected by the change in chamber pressure. Due to the influence of the boundary layer, blockage had appeared for all the cases even though the total pressure recovery was better than the theoretical value.KeywordsStrut injectorBlockageSupersonic wind tunnel
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