Fifth International Symposium on Turbulence and Shear Flow Phenomena
DOI: 10.1615/TSFP5
TOLLMIEN-SCHLICHTING WAVE CANCELLATION USING AN OSCILLATING LORENTZ FORCE
pages 419-424
DOI: 10.1615/TSFP5.640
SINOPSIS
Using 2-D and 3-D Direct Numerical Simulations, we present results of Tollmien-Schlichting (TS) wave cancellation in a flat plate boundary layer, where the initial TS wave is supposed to be cancelled out by a secound wave of same amplitude, but 180° phase shifted. Considering low electrically conductive fluids like seawater, an oscillating Lorentz force is used to generate the counter-phased wave. Although the Lorentz force, hence the counter-phased wave, are inhomogeneous in spanwise direction, the remaining wave amplitude is reduced by more than 90% compared to the uncontrolled case.