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Numerical Simulation on Interactions of Longitudinal Vortices in a Turbulent Boundary Layer  

Yang Jang-Sik (㈜ 기경 IE&C. 환경에너지 신기술 개발연구소)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.29, no.6, 2005 , pp. 637-644 More about this Journal
Abstract
This paper describes the numerical simulation of the interaction between longitudinal vortices ("common flow up") and a 3-D turbulent boundary layer over a flat plate To analyze the common flow up Produced from vortex generators. the flow field behind the vortex generators Is modeled by the information that is available from studies on a half-delta winglet. Also. the Reynolds-averaged Navier-Stokes equation for three-dimensional turbulent flows. together with a two-layer turbulence model to resolve the near-wall flow, is solved by the method of AF-ADI. The computational results predict that the boundary layer is thinned in the regions where the secondary flow is directed toward the wall and thickened where it is directed away from the wall Also. the numerical results. such as Reynolds stresses. turbulent kinetic energy and skin friction characteristics generated from the vortex generators . are reasonably close to the experimental data.
Keywords
Longitudinal vortex; Vortex generator; Numerical simulation; Half-delta winglet;
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