Type of Document Master's Thesis Author Ainslie, Walter E. URN etd-07072010-020419 Title The effect of solidity on the pre- and post-stall flow in a linear compressor cascade Degree Master of Science Department Mechanical Engineering Advisory Committee
Advisor Name Title O'Brien, Walter F. Jr. Committee Chair Moore, John Committee Member Pierce, Felix J. Committee Member Keywords
- Cascades (Fluid dynamics)
Date of Defense 1988-05-02 Availability restricted Abstract
An experimental investigation of the performance characteristics of a solid wall linear compressor cascade was conducted. The purpose of the experiments was to determine the effects of the blade row configuration parameters stagger and solidity on the pre-and post-stall behavior of the flow in the cascade. Tests were conducted at a solidity of 1.5, and for two stagger angles, 36.4 degrees and 25 degrees.
The investigation included the use of high speed motion pictures with smoke flow visualization in the cascade, measurements of the total pressure and velocity of the flow upstream and downstream of the cascade, and measurements of the blade surface pressures. The experiments were conducted for a range of angle of attack from 0 degrees to 45 degrees.
To determine the effects of solidity on the pre- and post-stall behavior of the flow in the cascade, the results obtained for the present 1.5 solidity cascade were compared to previous results from the same cascade tested at a solidity of 1.0. The flow in the two cascades was observed to be similar in nature, but the influence of the reduced blade loading in the high solidity cascade was apparent. For the higher solidity cascade, flow losses at low angle of attack were found to be larger, but stalling behavior was delayed.
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