Results 11 to 20 of about 1,436 (263)
Aerospace, 2023 Inlet swirl distortion is generally considered as a type of velocity distortion, and inlet guide vanes (IGVs) are widely used in the multi-stage compressor of aero-engines to eliminate the tangential velocity of the swirl flow.
Yibo Fang +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
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Aerodynamic Optimization Design of a Supersonic Compressor Rotor with High Pressure Ratio
International Journal of Aerospace Engineering, 2021 Supersonic compressors have a high wheel speed and operational capability, which facilitate a high stage pressure ratio. However, the strong shock waves in the passage of a supersonic rotor and the interference between shock waves and boundary layers can
Cui Cui, Zhenggui Zhou, Endor Liu
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Casing-groove optimisation for stall margin in a transonic compressor rotor [PDF]
International Journal of Numerical Methods for Heat & Fluid Flow, 2020 Purpose This paper aims to understand the aerodynamic blockage related to near casing flow in a transonic axial compressor using numerical simulations and to design an optimum casing groove for stall margin improvement using a surrogate optimisation technique.
Mustaffa, Ahmad Fikri +1 more
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Design Optimization of 1.5-Stage Transonic Compressor Based on BPNN Surrogate Model and NSGA-II
Machines, 2023 To achieve multi-objective aerodynamics design optimization for a 1.5-stage transonic compressor, a design platform incorporating blade parameterization methods, a BPNN surrogate model, and the NSGA-II optimization method was developed. The stagger angle
Xinlong Li +5 more
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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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Machines, 2023 To investigate the influence of blade aspect ratio and solidity on the performance of heavy-duty gas turbine transonic compressors, a multi-objective optimization design platform was built by adopting the blade parameterization method based on the ...
Shuaipeng Liu +4 more
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International Journal of Aerospace Engineering, 2023 The tip leakage vortex (TLV) induced by the tip clearance flow has a significant impact on the performance of centrifugal compressors, causing impeller flow losses and reducing the stall margin.
Shuli Hong +3 more
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Aerospace, 2021 This work focuses its attention on possibilities to enhance the stability of an axial compressor using a casing treatment technique. Circumferential grooves machined into the case are considered and their performances evaluated using three-dimensional ...
Marco Porro +2 more
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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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