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http://dx.doi.org/10.5139/JKSAS.2007.35.11.957

A Study on the Far-Field Boundary Condition of Tightly Coupled CFD/FreeWake Method in Hover  

Wie, Seong-Yong (한국과학기술원 항공우주공학과 대학원)
Lee, Jae-Hun (한국과학기술원 항공우주공학과 대학원)
Kwon, Jang-Hyuk (한국과학기술원 항공우주공학과)
Lee, Duck-Joo (한국과학기술원 항공우주공학과)
Chung, Ki-Hoon (한국항공우주연구원)
Kim, Seung-Bum (한국항공우주연구원)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.35, no.11, 2007 , pp. 957-963 More about this Journal
Abstract
this study, helicopter rotor flow is simulated by using a tightly coupled CFD/FreeWake method to describe wake characteristics and to calculate the flow field and rotor aerodynamics. In this tightly coupled CFD/FreeWake method, freewake model provides the boundary condition required in the CFD calculation and CFD provides the pressure distribution on blade surface used in feewake generation. To show the advantage of this method, the pressure distributions on blade surface of a hovering 2-bladed rotor are compared with other numerical methods. This tightly coupled CFD/FreeWake method shows good accuracy in the predicted results and efficient computation time.
Keywords
Tightly coupled method; CFD; FreeWake; Rotor;
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