Results 11 to 20 of about 2,271 (286)
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
core +3 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 +2 more sources
Numerical Optimization of a Stall Margin Enhancing Recirculation Channel for an Axial Compressor [PDF]
Fluids, 2019 A proof of concept is provided by computational fluid dynamic simulations of a new recirculating type casing treatment. This treatment aims at extending the stable operating range of highly loaded axial compressors, so to improve the safety of sorties of high-speed, high-performance aircraft powered by high specific thrust engines.
Rona, Aldo, Kawase, Motoyuki
core +6 more sources
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
doaj +4 more sources
Single and Multiple Circumferential Casing Groove for Stall Margin Improvement in a Transonic Axial Compressor [PDF]
Volume 2A: Turbomachinery, 2020 Abstract The stability limit of a tip-stalling axial compressor is sensitive to the magnitude of the near casing blockage. In transonic compressors, the presence of the passage shock could be a major cause for the blockage. Identification and elimination of this blockage could be key to improving the stability limit of the compressor. In
Bin Mustaffa, A F, Kanjirakkad, V
openaire +3 more sources
Passive casing treatments for stall margin improvement in axial compressors
, 2020 Axial flow compressors are mainly used in the power generation and aerospace industry. Axial compressors are prone to instability issues since it is the nature of compressors to impart work on a fluid across an adverse pressure gradient. Instability in the compressor will instigate rotating stall and ultimately surge within the compression system.
Ahmad Fikri bin Mustaffa, Ahmad Fikri bin Mustaffa
core +2 more sources
A Review of Stall Detection in Subsonic Axial Compressors
MachinesStall events in axial compressor systems have been a limiting factor for efficiency of such systems and a source of safety concerns. The detection of the onset of stall, and in many cases the precursor of the onset of stall, have been of interest in the ...
Kellie N. Wilson +6 more
doaj +2 more sources
The Pre-Stall Behavior of a 4-Stage Transonic Compressor and Stall Monitoring Based on Artificial Neural Networks [PDF]
International Journal of Rotating Machinery, 2004 Current research concerned with the aerodynamic instability of compressors aims at an extension of the operating range of the compressor towards decreased massflow. In practice, a safety margin is maintained between operating point and stability limit to
Frank-Oliver Methling +2 more
doaj +2 more sources
Stability Enhancement and Noise Reduction of an Axial Compressor with Foam Metal Casing Treatment
Aerospace, 2022 Foam metal is a foam-like substance with a high porosity; it has been used in flow control, vibration abatement, and acoustic absorption, mainly based on its physical properties.
Jia Li +5 more
doaj +1 more source
Entropy, 2020 In order to investigate the influence of steam ingestion on the aerodynamic stability of a two-stage low-speed axial-flow compressor, multiphase flow numerical simulation and experiment were carried out.
Baofeng Tu, Xinyu Zhang, Jun Hu
doaj +1 more source