Rotor Wake Simulation by using a Non-equilibrium Eddy Viscosity Model
Simulation of vortical wake generated from the blade tip is an important subject in rotor aerodynamics. The blade-vortex interaction and interaction between vortices and adjacent body are main sources of noise and vibration of the rotorcraft. Therefore, the accurate prediction of the rotor wake is a very important issue. It is well known that the conventional two equation turbulence models perform rather poorly in computing vortical wake of a rotor. This study investigates the performance of the non-equilibrium eddy viscosity model, proposed by Yoshizawa et al.7, for the simulation of the vortical wake of hovering rotor compared with the standard k-ε model. Computations are performed for the flow over a 2-bladed hovering rotor tested by Caradonna & Tung8. Computationas are carried out by using the OpenFOAM. The results show that the non-equilibrium eddy viscosity model performs much better than the standard k-ε model in predicting rotor wake flow field.
Non-equilibrium eddy viscosity model Standard k-ε model Tip vortex Rotor wake Hovering rotor
Y. H. Kim S. O. Park
Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology, Dajeon 305-701, Republic of Korea
国际会议
2011年亚太航空航天技术学术会议(APISAT 2011)
澳大利亚
英文
1-7
2011-02-28（万方平台首次上网日期，不代表论文的发表时间）