The Formation and Growth of a Hairpin Vortex
Direct numerical simulation was used to study the formation and growth of a hairpin vortex in a flat-plate boundary layer. Fluid injection through the wall initiated a vortex which then spawned secondary and tertiary vortices before viscosity damped the disturbance. A second simulation in which the blowing was much weaker, but extended over a larger streamwise distance did not produce a hairpin vortex.
KeywordsDirect Numerical Simulation Vortex Line Streamwise Direction Spanwise Direction Secondary Vortex
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