Results 11 to 20 of about 463,176 (236)
Control of rotorcraft retreating blade stall using air-jet vortex generators [PDF]
, 2006 A series of low-speed wind tunnel tests were carried out on an oscillating airfoil fitted with two rows of air-jet vortex generators (AJVGs). The airfoil used had an RAE 9645 section and the two spanwise arrays of AJVGs were located at x/c=0.12 and 0.62.
Kokkalis, A. +5 more
core +9 more sources
Numerical investigation of recess casing treatments in axial flow fans [PDF]
, 2003 T he casing treatment technique for the axial fan has never been more significant since its potential applications were recognized in gas turbines, tunnel ventilation and many other industrial applications where the axial fan would benefit from the ...
Ghila, Abdurazag M.
core +7 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
A new stall-onset criterion for low speed dynamic-stall [PDF]
, 2005 The Beddoes/Leishman dynamic-stall model has become one of the most popular for the provision of unsteady aerofoil data embedded in much larger codes.
Sheng, W. +7 more
core +1 more source
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
doaj +1 more source