Numerical Simulation and Parametric Study of Hartmann- Sprenger Tube Based Powered Device
نویسندگان
چکیده
Numerical simulations of unsteady flow in a Hartmann resonance tube are carried out with the goal of understanding the effect of jet Mach number on the flow characteristics. The device, which consists of a convergent nozzle facing a closed end tube produces a nearly normal shock that fluctuates in the gap between the nozzle and the tube. Numerical solutions were obtained for the unsteady Reynolds average Navier-Stokes equations using the WIND code. Computational results are presented for pressure fluctuations and sound pressure level (SPL) spectra at different jet Mach numbers. The results demonstrate different resonance tube operating modes depending on jet Mach number. The pressure fluctuations associated with each mode are similar to the experimentally measured pressure fluctuations in the jet screech and jet regurgitant modes.
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