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http://dx.doi.org/10.5139/JKSAS.2007.35.8.670

Turbulent Flow Simulations on 2-Dimensional Ground Effect Part II. Study on the Effects of Ground Boundary Conditions  

Kim, Yoon-Sik (한국해양연구원 해양시스템안전연구소)
Lee, Jae-Eun (한국과학기술원 항공우주공학전공 대학원)
Kim, Eu-Gene (한국과학기술원 항공우주공학전공 대학원)
Kwon, Jang-Hyuk (한국과학기술원 항공우주공학 전공)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.35, no.8, 2007 , pp. 670-676 More about this Journal
Abstract
A comparative study on ground boundary conditions for the airfoil in ground effect has been carried out. The objective of the present study is to clarify effects of the ground boundary conditions so that it will be helpful to analyse results of wind tunnel tests using the fixed ground board or the image method. A low Mach number preconditioned Navier-Stokes solver using the overlap grid method has been applied. It has been turned out that results with the symmetric boundary condition are almost the same to those with the moving boundary condition. Results with the fixed ground boundary show discrepancy to those with the moving boundary condition when flow separation on the ground board takes place.
Keywords
Ground Effect; Moving Ground; Fixed Ground; Boundary Conditions; RAE 101 Airfoil;
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