Enhancing the Resolution of Blade Tip Vortices in Hover with High-Order WENO Scheme and Hybrid RANS–LES Methods

The accurate prediction of blade tip vortices continues to be challenging for the investigation rotor aerodynamics. In current work, vortex system a Caradonna–Tung in hovering state is simulated on account framework high-order WENO scheme and hybrid RANS/LES method progressively. With RANS based fifth-order WENO–Roe scheme, spatial resolution wake age capture accuracy are improved significantly. However, unsteadiness fails distinguished. Then, DDES IDDES methods, coupled with implemented further enhance turbulence. Compared RANS, improvement reflected both statistical transient results DDES. identifiable core distributions can predicted at older ages. asymmetrical characteristic revealed along release fluctuation while distribution velocity profiles enhanced. application IDDES, secondary turbulent structures captured around primary complex behaviors observed. statistics averaged flow field similar