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Predicting BVI Loadings and Wake Structure of the HARTII Rotor Using Adaptive Unstructured Meshes
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 Title & Authors
Predicting BVI Loadings and Wake Structure of the HARTII Rotor Using Adaptive Unstructured Meshes
Yu, Dong-Ok; Jung, Mun-Seung; Kwon, Oh-Joon; Yu, Yung-H.;
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 Abstract
The flow fields around the HARTII rotor were numerically investigated using a viscous flow solver on adaptive unstructured meshes. An overset mesh and a deforming mesh technique were used to handle the blade motion including blade deflection, which was obtain from the HARTII experimental data. A solution-adaptive mesh refinement technique was also used to capture the rotor wake effectively. Comparison of the sectional normal force and pitching moment at 87% radial station between the two cases, with and without the blade deflection, showed that the blade loading is significantly affected by blade torsion. It was found that as the mesh was refined, the strength of tip vortex is better preserved, and the magnitude of high frequency blade loading, caused by blade-vortex interaction (BVI), is further magnified. It was also found that a proper time step size, which corresponds to the cell size, should be used to predict unsteady solutions accurately. In general, the numerical results in terms of the unsteady blade loading and the rotor wake show good agreement with the experimental data.
 Keywords
CFD(Computational Fluid Dynamics);Unstructured Overset Mesh Technique;Deforming Mesh Technique;BVI(Blade-Vortex Interaction);Blade Deflection;
 Language
English
 Cited by
1.
NACA0015익형을 가지는 로터 깃 끝와류의 후류유동구조,손용준;김정현;한용운;

한국항공우주학회지, 2011. vol.39. 3, pp.210-217 crossref(new window)
1.
Wake Structure of Tip Vortex Generated by a Model Rotor Blade of NACA0015 Airfoil Section, Journal of the Korean Society for Aeronautical & Space Sciences, 2011, 39, 3, 210  crossref(new windwow)
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