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Stall Margin Improvement in a Centrifugal Compressor through Inducer Casing Treatment [PDF]
International Journal of Rotating Machinery, 2016 The increasing trend of high stage pressure ratio with increased aerodynamic loading has led to reduction in stable operating range of centrifugal compressors with stall and surge initiating at relatively higher mass flow rates.
V. V. N. K. Satish Koyyalamudi +1 more
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Stall Margin Improvement in an Axial Compressor by Continuous and Pulsed Tip Injection
International Journal of Turbomachinery, Propulsion and Power, 2022 Stall and surge are strong limitations in the operating range of compressors and thus one of the major limits of jet engine performance. A promising way to push the stability limit of compression machines is to inject a small amount of flow at the blade ...
Joseph Moubogha Moubogha +4 more
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Actuators, 2022 Active flow control methods are commonly used in expanding the operating range of compressors. Indeed, unsteady active control methods are the main focus of researchers due to their effectiveness.
Zhuoqi Liu +3 more
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Journal of Applied Fluid Mechanics, 2017 Axial slot CTs were designed and applied on Rotor 67 to understand the physical mechanisms responsible for the improvement of the stall margin. Unsteady Reynolds-averaged Navier-Stokes was applied in addition to steady Reynolds-averaged Navier-Stokes to ...
H. Kuang, S. Wuli Chu, H. Zhang, S. Ma
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Numerical Investigation for the Impact of Single Groove on the Stall Margin Improvement and the Unsteadiness of Tip Leakage Flow in a Counter-Rotating Axial Flow Compressor [PDF]
Energies, 2017 A low-speed counter-rotating axial flow compressor (CRAC) with single circumferential grooved casing treatment (CT) was investigated numerically. Both steady and time-accurate numerical calculations were performed to study the effects of the single ...
Xiaochen Mao, Bo Liu, Hang Zhao
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Energies, 2021 Axial slot casing treatment is a common method to extend the stall margin of a compressor. Based on the mechanism of unsteady flow control, this paper redesigns axial slots with large circumferential interval and small opening area. To test the effect of
Zepeng Liu, Guoping Huang, Omer Musa
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Comparative Study of the Performance Improvement of an Axial Compressor with a Micro-Vortex Generator and a Suction Slot [PDF]
Journal of Applied Fluid Mechanics, 2023 Flow control methods have been gradually applied to improve the flow field characteristics of axial compressors. However, most of the current research is focused on the cascade, and few studies have taken a compressor as the research object. Therefore, a
S. Ma, X. L. Sun, W. Cheng, W. L. Chu
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Aerospace, 2023 This paper investigates the effects of two modifications to a vaned recessed casing treatment. First, the shape of a circular curve was used in the top of the treated casing. Second, a fully curved guide vane was also applied.
Mohammad Akhlaghi, Yahya Azizi
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Engineering Applications of Computational Fluid Mechanics, 2022 Counter-rotating axial-flow compressor (CRAC) is a promising technology to increase the thrust-to-weight ratio of aero-engines. Self-recirculating casing treatment (SRCT) is selected to explore its stability enhancement capacity in the CRAC.
Yanchao Guo +3 more
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A Study of Casing Treatment Stall Margin Improvement Phenomena [PDF]
Volume 1A: General, 1975 The results of a program of experimental and analytical research in casing treatments over axial compressor rotor blade tips are presented. Circumferential groove, axial-skewed slot, and blade angle slot treatments were tested at low speeds. With the circumferential groove treatment the stalling flow was reduced 5.8 percent at negligible efficiency ...
D. C. Prince +2 more
openaire +1 more source