Experimental and Numerical Investigations on Transition in a Laminar Separation Bubble

  title={Experimental and Numerical Investigations on Transition in a Laminar Separation Bubble},
  author={Murong Lang and Olaf Marxen and U. Rist and Siegfried Wagner},
A laminar boundary layer separates in a region of adverse pressure gradient on a flat plate, undergoes transition, and finally the turbulent boundary layer reattaches. Laminar-turbulent transition within this laminar separation bubble (LSB) is investigated by means of measurements with a Laser-Doppler-Anemometer (LDA), flow visualization in water and direct numerical simulation (DNS). The role of unsteady disturbances with and without controlled spanwise variation in the occuring mechanism of… CONTINUE READING


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