Journal
AEROSPACE SCIENCE AND TECHNOLOGY
Volume 111, Issue -, Pages -Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ast.2021.106518
Keywords
High-order methods; Rotorcraft; CFD; IGE; OGE; Ground effect
Categories
Funding
- EPSRC [EP/P020259/1]
- ARCHER through UK Turbulence Consortium [EPSRC] [EP/L000261/1, EP/R029326/1]
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brasil (Capes) [001, 88881.128864/2016-01]
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In this study, the aerodynamic performance of the Caradonna and Tung and S-76 helicopters in hover was investigated using a new numerical method. The predictions were compared with experimental data, showing good agreement. The simplified concept of multiple reference frame technique was utilized to define the frame of reference at the solver level, avoiding complex mesh interface handling.
In the present work, the aerodynamic performance of the Caradonna and Tung and S-76 in hover were investigated using a simplified concept of multiple reference frame (MRF) technique in the context of high-order Monotone Upstream Centred Scheme for Conservation Laws (MUSCL) cell-centred finite volume method. In the present methodology, the frame of reference is defined at the solver level by a simple user input avoiding the use of mesh interface to handle the intersections between frames of reference. The calculations were made for both out-of-ground-effect (OGE) and in-ground-effect (IGE) cases and compared with experimental data in terms of pressure distribution, tip-vortex trajectory, vorticity contours and integrated thrust and torque. The predictions were obtained for several ground distances and collective pitch angle at tip Mach number of 0.6 and 0.892. (C) 2021 The Author(s). Published by Elsevier Masson SAS.
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