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S8 Engenharia Aeroespacial |
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Title:
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THREE-DIMENSIONAL SUPERSONIC FLOW OVER A SPIKE-NOSED BODY OF REVOLUTION
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Summary :
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THE UNSTEADY, VISCOUS, SUPERSONIC FLOW OVER A SPIKE-NOSED BODY OF REVOLUTION WAS NUMERICALLY INVESTIGATED BY SOLVING THE NAVIER-STOKES EQUATIONS. THE TIME-ACCURATE COMPUTATIONS WERE PERFORMED EMPLOYING AN IMPLICIT ALGORITHM BASED ON THE SECOND-ORDER TIME ACCURATE LU-SGS SCHEME WITH THE INCORPORATION OF A SUBITERATION PROCEDURE TO MAINTAIN TIME ACCURACY. THE CHARACTERISTICS OF THE FLOW FIELD FOR A MACH NUMBER OF 3.0, REYNOLDS NUMBER OF 7.87 X 106/M, AND ANGLES OF ATTACK OF 5 AND 10 DEGREES ARE DESCRIBED. SELF-SUSTAINED ASYMMETRIC SHOCK WAVE OSCILLATIONS WERE OBSERVED IN THE NUMERICAL COMPUTATIONS FOR THESE ANGLES OF ATTACK. THE MAIN CHARACTERISTICS OF THE FLOW FIELD, AS WELL AS ITS INFLUENCE ON DRAG COEFFICIENT IS DISCUSSED. |
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Author :
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MORGENSTERN JUNIOR, ALGACYR 0
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Paper View :
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