The Transition in a Wake Caused by Heating of a Streamlined Cylinder
Alexander B. Ezersky and Pierre Paranthoen
Temperature fluctuations in a Bénard-von Kármán street behind a heated cylinder were studied. It was found in experiments that heating of a cylinder streamlined by an air flow gives rise to dark impulses in the time series of temperature fluctuations in a vortex wake. We attribute the appearance of dark impulses to topological defects arising in a spatially periodic vortex street.