Aerodynamic analysis of potential use of flow control devices on helicopter rotor blades

21st Fluid Mechanics Conference

物理学;力学

Tejero, F.^1 ; Doerffer, P.^1 ; Szulc, O.^1

Transonic Flows and Numerical Methods Department, Szewalski Institute of Fluid-Flow Machinery (IMP PAN), 14 Fiszera Street, Gdan´sk 80-231, Poland^1

关键词: Aerodynamic analysis;    Flow control devices;    Helicopter rotor blades;    High performance computing;    Induced separation;    Numerical investigations;    Numerical validations;    Streamwise vortices;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/530/1/012067/pdf
DOI  :  10.1088/1742-6596/530/1/012067

学科分类：力学，机械学

来源: IOP

【 摘 要 】

The interest in the application of flow control devices has been rising in the last years. Recently, several passive streamwise vortex generators have been analysed in a configuration of a curved wall nozzle within the framework of the UFAST project (Unsteady Effects of Shock Wave Induced Separation, 2005 - 2009). Experimental and numerical results proved that the technology is effective in delaying flow separation. The numerical investigation has been extended to helicopter rotor blades in hover and forward flight applying the FLOWer solver (RANS approach) implementing the chimera overlapping grids technique and high performance computing. CFD results for hover conditions confirm that the proposed passive control method reduces the flow separation increasing the thrust over power consumption. The paper presents the numerical validation for both states of flight and the possible implementation of RVGs on helicopter rotor blades.