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http://dx.doi.org/10.5139/JKSAS.2008.36.8.719

Verification of Hovering Rotor Analysis Code Using Overlapped Grid  

Kim, Jee-Woong (건국대학교 항공우주정보시스템공학과 대학원)
Park, Soo-Hyung (건국대학교 항공우주정보시스템공학과)
Yu, Yung-Hoon (건국대학교 항공우주정보시스템공학과)
Kim, Eu-Gene (한국과학기술원 항공우주공학과 대학원)
Kwon, Jang-Hyuk (한국과학기술원 항공우주공학과)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.36, no.8, 2008 , pp. 719-727 More about this Journal
Abstract
A 3-D compressible Navier-Stokes solver using overlapped grids is developed to predict a flow-field around a hovering rotor. The flow solver is verified by a parametric study with the grid spacing of wake grid, spatial accuracy and turbulence model. Computations are performed with different Chimera grid systems. Computational results are compared with the experimental data of Caradonna et al. for both blade loading and the tip vortex behavior. Numerical results show good agreements with experiments for the distribution of surface pressure and tip vortex behavior. Pressure distributions over the blade have marginal differences for different numerical methods, whereas large discrepancies are seen in the prediction of the wake behavior. Results unexpectedly show that the vortex strength from an automated cut-paste Chimera grid is weaker than that from the conventional Chimera grid.
Keywords
Overlapped grid; Hovering rotor; Turbulence model;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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