旋涡破裂引起的流动非定常特性

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1998, Vol. 19 ›› Issue (5): 553-555.

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UNSTEADY CHARACTER OF VORTEX BREAKDOWN FLOW FIELDS

Ge Lixin¹, Li Chunxuan²

1. The Laboratory of Computational Physics, The Institute of Applied Physis and Computational Mathematics, Beijing, 100088;2. The State lab. of CFD, Beijing University of Aeronautics and Astronautics, Beijing, 100083

Received:1997-12-01 Revised:1998-02-25 Online:1998-10-25 Published:1998-10-25

Abstract

Abstract:

The software of solving the three dimensional, compressible, fully laminar Navier Stokes equations is made by utilizing the implicit solver based on the Beam Warming algorithm. The numerical results of the flow field over delta wings are obtained by using this software. Unsteadiness of various parameters in vortex breakdown flow fields is discovered, together with the axial fluctuation of the breakdown point, which characterizes the unsteady nature of the flowfield.

Key words: vor tex br eakdown, r ecycle r egion, br eakdown point

CLC Number:

Ge Lixin;Li Chunxuan. UNSTEADY CHARACTER OF VORTEX BREAKDOWN FLOW FIELDS[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1998, 19(5): 553-555.

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UNSTEADY CHARACTER OF VORTEX BREAKDOWN FLOW FIELDS

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