Abstract
Heat transfer in channels with the pressure gradient has been studied experimentally. The considered rectangular channel had a diverging and a converging section. Air under atmospheric conditions at the channel inlet was considered as a heat-transfer fluid. Steady and pulsating flow regimes were studied at different frequencies and amplitudes of forced pulsations generated by a rotating flap periodically blocking the channel cross section. The effect of forced flow pulsations on heat transfer in channels with the pressure gradient has been described.
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