Transonic hovering rotor aeroacoustic predictions using Navier-Stokes/Kirchhoff method
A numerical method based on chimera techniques is developed to compute the far-field acoustic signature of helicopter rotors in hover. The numerical simulation is carried out in two parts of flowfiled simulation and acoustic prediction. The computation of aerodynamics is solving equations on a system of overset grids-a NS solver based upon a efficient rotor mesh and a Euler solver based upon a cylindrical back mesh. We compute the for-field noise with an acoustic integral over a surface which completely encloses the rotor blades. Interpolations onto this acoustic surface use the same overset-grid techniques that are used for the flowfield solution. The sound propagation to the far field was computed with Kirchhoff formalism.
Jin-hua Liu Ai-ming Yang Pei-fen Weng
Shanghai Institute of Applied Mathematics & Mechanics, Shanghai University, Shanghai 200072, China
国际会议
The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)
上海
英文
1020-1025
2007-06-11（万方平台首次上网日期，不代表论文的发表时间）