Journal of Hydrospace Technology
- Volume 2 Issue 2
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- Pages.14-23
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- 1996
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- 1225-8717(pISSN)
The Effects of Mean-Line Shape on Longitudinal Stablility of a Wing in Ground Effect
- Kim, Wu-Joan (Korea Research Institute of Ships and Ocean Engineering) ;
- Shin, Myung-Soo (Korea Research Institute of Ships and Ocean Engineering)
- Published : 1996.11.01
Abstract
The Reynolds-averaged Navier-Stokes equations for turbulent flow around a two-dimensional foil section moving ova. a flat surface (roller plate) is solved. The numerical method utilized the finite-difference schemes in collocated grids and the Baldwin-Lomax model is employed for turbulence closure. Calculations are carried out for three foil sections of different mean-line shape with various height ratio. As a foil approaches the bottom surface, the lift is augmented, while there exist some differences in pitching moment due to mean-line shape. It was found that the S-shaped mean line deteriorates lift characteristics but increases pitching moment to restore the designed height.
Keywords