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CFD Simulation of Blade Flows With High Amplitude Pitching

Kumar, Ramesh, Chew, John, Amirante, Dario, Murua, J and Hills, Nicholas (2017) CFD Simulation of Blade Flows With High Amplitude Pitching In: ASME 2017 Turbomachinery Technical Conference & Exposition (Turbo Expo), 2017-06-26 - 2017-06-30, Charlotte, North Carolina, USA.

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Large and flexible wind turbine blades may be susceptible to severe blade deformations coupled with dynamic stall. To advance prediction capability for this problem a general deforming mesh computational fluid dynamics (CFD) method has been developed for calculating flows with moving or deforming boundaries using an elastic spring analogy. The method has been evaluated against experimental data for flow around a pitching NACA0012 airfoil in the deep dynamic stall regime where flow is highly separated, and compared with other authors0 CFD simulations for pitching airfoil. The effects of varying the reduced frequency are also investigated. During the upstroke the present results are in generally good agreement with experiment and other CFD studies. During the downstroke some differences with experiment and other CFD models are apparent. This may be due to the sensitivity of the separated flow to modelling assumptions and experimental conditions. Overall, the degree of agreement between CFD and experiment is considered encouraging.

Item Type: Conference or Workshop Item (Conference Paper)
Subjects : Mechanical Engineering Sciences
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
Murua, J
Date : 2017
DOI : 10.1115/GT2017-63573
Copyright Disclaimer : Copyright 2017 by ASME
Contributors :
Uncontrolled Keywords : CFD, Dynamic Stall, LEV, TEV
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 09 Mar 2017 11:02
Last Modified : 16 Jan 2019 17:13

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