25th Congress of International Council of the Aeronautical Sciences, 3 - 8 September 2006, Hamburg, Germany
Paper ICAS 2006-2.2.4

A COUPLED PRESCRIBED WAKE-EULER SOLVER FOR EFFICIENT COMPUTING HELICOPTER ROTOR FLOWS IN HOVER

K. Hejranfar, M. Mohammadi
Sharif Univ. of Technology, Iran

Keywords: Rotor Flow, Perturbation Method, Prescribed Wake Model, Unstructured Grids

A coupled prescribed wake-Euler solver is developed to efficiently simulate the flowfield of hovering helicopter rotor. The Euler equations are solved using a cell-centered finite volume upwind scheme on unstructured meshes. The wake effects are modeled using only a tip vortex trailed at the tip of each blade.

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