Numerical Investigation of Circumferential Groove Casing Treatment in a Highly-Loaded Low-Reaction Transonic Compressor Rotor

Zhu, W. D.; Cai, Le; Wang, Songtao; Wang, Zhongqi

doi:10.1007/s11630-019-1180-y

Cited by 8 publications

(1 citation statement)

References 14 publications

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“…Müller et al 7 found in a study on transonic compressor rotor that the circumferential multi-groove near the leading edge delayed the occurrence of leading edge overflow by reducing the tip load to push the main flow/tip leakage flow interface downstream. A similar conclusion was reached in the research by Ross et al 8 and Zhu et al 9 . In addition to the location, the depth and width of groove also had an impact on the stability expansion capacity.…”

Section: Introductionsupporting

confidence: 86%

Impact of the ending position of controllable speed casing on the flow stability in a transonic compressor rotor

Zhao

Zhong

2023

Proceedings of the Institution of Mechanical Engineers, Part A:

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The structure of casing treatment has a significant influence on the stability expansion effect. The ending position of the rotatable ring is one of the important structural parameters in the controllable speed casing. The impact of ending position of the rotatable ring rotating at the same speed as the rotor on the stability expansion and stability expansion mechanism was studied in this paper. The results show that, when the ending position of rotatable ring expands downstream in the range of 20% to 60% axial chord length, because of the improvement in the tip leakage vortex trajectory and main flow/leakage flow interface, the stability expansion effect rises gradually. The further downstream expansion of ending position from 60% axial chord length, however, has a slight impact on tip flow, bringing out a steady stability expansion effect around 52.5%. The best stability expansion effect of ending position occurs at 60% axial chord length where the stable operating margin increases by 53.5%.

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Section: Introductionsupporting

confidence: 86%