Results 21 to 30 of about 463,176 (236)

Axial Flow Compressor Stability Enhancement: Circumferential T-Shape Grooves Performance Investigation

open access: yesAerospace, 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
doaj   +1 more source

Effect of dynamic stall on the aerodynamics of vertical-axis wind turbines [PDF]

open access: yes, 2011
Accurate simulations of the aerodynamic performance of vertical-axis wind turbines pose a significant challenge for computational fluid dynamics methods.
Scheurich, Frank, Brown, Richard
core   +4 more sources

Effects of Tip Leakage Flow on the Aerodynamic Performance and Stability of an Axial-Flow Transonic Compressor Stage

open access: yesEnergies, 2021
To explain the effect of tip leakage flow on the performance of an axial-flow transonic compressor, the compressors with different rotor tip clearances were studied numerically. The results show that as the rotor tip clearance increases, the leakage flow
Botao Zhang   +3 more
doaj   +1 more source

An Optimization Study of Circumferential Groove Casing Treatment in a High-Speed Axial Flow Compressor

open access: yesAerospace
In this paper, a numerical optimization study of single-groove casing treatment was conducted on a high-speed axial compressor. One of the aims is to find the optimal structure of a single groove that can improve compressor stability with minimal loss in
Wenhao Liu   +3 more
doaj   +1 more source

Stall Margin Improvement in a Centrifugal Compressor through Inducer Casing Treatment

open access: yesInternational 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
doaj   +1 more source

Performance enhancement of an axial flow compressor using active flow control technique

open access: yesCogent Engineering
This research article focuses on improving the efficiency of an axial flow compressor stage, enhancing the stall margin, and optimizing flow parameters.
Prithesh Pinto, Srinivas G
doaj   +1 more source

Transient Analysis of Flow Unsteadiness and Noise Characteristics in a Centrifugal Compressor with a Novel Vaned Diffuser

open access: yesApplied Sciences, 2021
The demands to apply transonic centrifugal compressor have increased in the advanced gas turbine engines. Various techniques are used to increase the aerodynamic performance of the centrifugal compressor.
Ali Zamiri   +3 more
doaj   +1 more source

Axial transonic compressor performance enhancement with circumferential grooves [PDF]

open access: yesMechanical Sciences, 2020
Casing treatment has been broadly used as a prudent passive flow control technique to improve the stall margin with a small drop in efficiency. The effect of grooves in certain details is overlooked however, different grooves shape (angels and location ...
N. Ahmad   +5 more
doaj   +1 more source

Improvement of Moderately Loaded Transonic Axial Compressor Performance Using Low Porosity Bend Skewed Casing Treatment

open access: yesInternational Journal of Rotating Machinery, 2014
This paper presents experimental results of a single stage transonic axial flow compressor coupled with low porosity bend skewed casing treatment. The casing treatment has a plenum chamber above the bend slots.
Dilipkumar Bhanudasji Alone   +6 more
doaj   +1 more source

Design Optimization of a Dual-Bleeding Recirculation Channel to Enhance Operating Stability of a Transonic Axial Compressor

open access: yesEnergies, 2021
The present work performed a comprehensive investigation to find the effects of a dual-bleeding port recirculation channel on the aerodynamic performance of a single-stage transonic axial compressor, NASA Stage 37, and optimized the channel’s ...
Tien-Dung Vuong, Kwang-Yong Kim
doaj   +1 more source

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