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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. 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:

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: