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Computational Aeroacoustics of a Supersonic Jet Impinging on an Inclined Flat Plate Using High Speed Parallel Computers

T. NONOMURA, Y. GOTO, K. FUJII

Abstract


Aeroacoustic waves from a supersonic jet impinging on an inclined flat plate are computed with the high speed parallel computers for improving the prediction of the acoustic waves from rocket plumes. For the parallelization, openMP and MPI techniques are used. The results show that three kinds of acoustic waves are emitted; 1) acoustic waves from the jet-shear layer of the main jet, 2) acoustic waves from the impingement region, and 3) acoustic waves form the jet-shear layer downstream of the impingement region. The second type of acoustic wave has not been well-modeled in the conventional prediction methods of the acoustic waves from the rocket plume. The very high speed parallel computers enable us to clarify such a complicated flow field.

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