Abstract
Experimental data on the averaged and pulsating characteristics of the flow in divergent channels within a wide range of unsteadiness parameters have been obtained. To measure the dynamics of instantaneous velocity vector fields and Reynolds stresses, the optical method of Smoke Image Velocimetry (SIV) has been employed. The effect of forced flow pulsations on these characteristics has been described depending on the correlation between the maximum pressure gradient related to the variable cross-sectional area of the channel and flow unsteadiness.
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