Influence of Seal Cavity Leakage Flow on Compressor Performance Investigated with a Circumferentially Averaged Method
Source abstract
Abstract
In order to investigate the effect of seal cavity leakage flow on a compressor’s performance and the interaction mechanism between the leakage flow and the main flow, a one-stage compressor with a cavity under the shrouded stator was numerically simulated using an inhouse circumferentially averaged through flow program. The leakage flow from the shrouded stator cavity was calculated simultaneously with main flow in an integrated manner. The results indicate that the seal cavity leakage flow has a significant impact on the overall performance of the compressor. For a leakage of 0.2% of incoming flow, the decrease in the total pressure ratio was 2% and the reduction of efficiency was 1.9 points. Spanwise distribution of the flow field variables of the shrouded stator shows that the leakage flow leads to an increased flow blockage near the hub, resulting in drop of stator performance, as well as a certain destructive effect on the flow field of the main passage.
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Research context
OpenAlex topics: Aerodynamics and Fluid Dynamics Research · Turbomachinery Performance and Optimization · Refrigeration and Air Conditioning Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Energy and Power Engineering, Beihang University, Beijing 100191, China
Jiangxi Research Institute, Beihang University, Nanchang 330096, China
Funding
National Science and Technology Major Project
References (14)
Show source-provided references
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