An analysis of the one-dimensional compressible flow in a rotating radial-plane impeller channel was conducted in order to provide an insight into the characteristics of the passage mean flow under the influence of centrifugal forces and losses. From a theoretical inves-tigation of the flow in an illustrative impeller channel with convergent-divergent area variation, the behavior of the flow along the channel was found to be generally similar in trend to the flow in a stationary convergent-divergent nozzle. The critical (sonic) section of the rotat¬ing channel occurred upstream of the geometric throat. The effect of the losses on the flow was similar to the effect of a reduction of the flow area.
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