Abstract
Vortex structure behind highly heated cylinder in a pulsating air flow is investigated experimentally. The pulsating flow is generated by a loud speaker up to 0.6m/s while the main flow sets 1m/s. The heat flux of the heated cylinder sets up to 72.6kW/m^2 then the maximum surface temperature of the cylinder reaches to about 600℃. In the non-heating condition, the generating vortex frequency follows the pulsating main flow velocity. However, in the highly heated condition, the vortex frequency cannot follow the pulsating flow.
