摘要
AbstractWith the help of the hot-film probe and a three-hole probe containing fast responsetransducers in association with a digital data acquisition and processing system, the flowmeasurements during stall on an isolated rotor are obtained. The relation between thenumber and speed of stall cells and the circumferential stalled region and the maingeometric parameters of cascade is described. The experimental results indicate thatfirstly, the rate of circumferential variation for acrodynamic parametero of allow passingthe cascade becomes smoother as the stagger angle is increased or the solidity decreasedand secondly, there is complex mass transport between the stalled and unstalled parts ofthe flow. It is confirmed by the latter that the fluid must cross from one side of the cell tothe other in the tangential direction.
AbstractWith the help of the hot-film probe and a three-hole probe containing fast responsetransducers in association with a digital data acquisition and processing system, the flowmeasurements during stall on an isolated rotor are obtained. The relation between thenumber and speed of stall cells and the circumferential stalled region and the maingeometric parameters of cascade is described. The experimental results indicate thatfirstly, the rate of circumferential variation for acrodynamic parametero of allow passingthe cascade becomes smoother as the stagger angle is increased or the solidity decreasedand secondly, there is complex mass transport between the stalled and unstalled parts ofthe flow. It is confirmed by the latter that the fluid must cross from one side of the cell tothe other in the tangential direction.
