21st Congress of International Council of the Aeronautical Sciences, Melbourne, Australia, 13-18 September, 1998
Paper ICAS-98-7.4.3

A NEW PROCEDURE FOR SIMULATING ROTOR/STATOR INTERACTION IN TURBOMACHINERY

Wu X. H., Chen M. Z.
Beijing University of Aeronautics, PRC

Keywords: turbomachinery, rotor-stator

A new numerical method is presented in this paper to simulate rotor / stator interaction in turbomachinery by use of a disturbance vortex method. By conducting a decomposition operation over flow quantities, the Lagrangian vortex method is used to capture the convective process of the disturbance vortex, and the deterministic vortex scheme to approximate the viscous diffusion process. The application of Baldwin Lomax turbulence model in wakes is developed, so as to overcome the difficulty in continuously tracing moving wake centerlines encountered by other numerical methods and the difficulties such as the much higher calculated viscosity in the outer region than that in the boundary regions. The agreement -between the computational and experimental results is generally good, which shows that the present method is reliable. The result also shows that this method can be used as a new tool for analyzing unsteady flow and mixing phenomena in turbomachinery.

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