Abstract
Flows induced by rotating objects appear in turbo-machinery, storage devices of computers and ocean circulations, and the investigation of these flows is very interesting. An accurate and reliable analysis of the turbo machine rotating parts is of major concern to ensure fail proof and long life turbine engines. In the case of low aspect ratio of blades makes it necessary to treat them as plates. One of the typical cases of these phenomena is the flow which develops between a rotating disc and a stationary disc (shroud), and the flow has been investigated numerically and experimentally. In this work the basic flow field is investigated over a rotating disk with the shroud at the top. There is a small inlet for air in the shroud and the inlet air gains radial, circumferential and axial velocity due to the rotating disc. An analysis is made to obtain exact solutions for the flow of air due to a disk rotating with a constant angular speed. The studies have been pursued on 4 different revolutions per minute (rpm) and 3 different heights. The various rpm at which experiments were done are 500rpm, 600rpm, 700rpm and 800rpm and the various heights are 5cm, 10cm and 15cm.
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