Journal
COMPUTERS & STRUCTURES
Volume 87, Issue 11-12, Pages 758-768Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compstruc.2008.11.011
Keywords
Helicopter blade-vortex interaction; Large-eddy simulation; Smagorinsky model
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A novel approach, large-eddy simulation, is proposed for the numerical investigation of helicopter blade-vortex mechanism of interaction. The novel approach overcomes all the issues, posed by the other CFD approaches, associated with the vortex dissipation due to the turbulence modeling (RANS, URANS) and computational limitations of DNS. The influence of vertical miss distance and vortex core size on the helicopter blade-vortex mechanism of interaction is subject of investigation. It was observed that the magnitude of the aerodynamic coefficients decreases with the increase of vertical miss distance and the decrease of vortex core size. (C) 2008 Elsevier Ltd. All rights reserved.
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