Laminar-to-turbulent transition on a plate with a blunt leading edge
Video of laminar-to-turbulent transition on a plate with a blunt leading edge. A favorable/adverse pressure distribution is imposed by a contoured ceiling. Iso-contours of the Lambda2-criterion illustrate the onset of turbulence due to separated-flow transition near the blunt leading edge, dampening of the turbulent structures by the flow acceleration, and re-amplification by the flow deceleration. […]
Laminar-to-turbulent transition on a NACA0018 airfoil
Laminar-to-turbulent transition on a NACA0018 airfoil at Re = 100,000 and 5 degrees incidence. Iso-contours are Q-criterion coloured by streamwise velocity. Airfoil surface is shaded with instantaneous wall shear stress.