Results 21 to 30 of about 1,436 (263)

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

Energies, 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, Xiaochen Mao, Xiaoxiong Wu, Bo Liu   +3 more
doaj   +1 more source

Axial transonic compressor performance enhancement with circumferential grooves [PDF]

Mechanical 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, Q. Zheng, H. Fawzy, T. Yaqoob, S. Abdu Ahmad, J. Bin   +5 more
doaj   +1 more source

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

Aerospace
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, Wuli Chu, Haoguang Zhang, Hao Wang   +3 more
doaj   +1 more source

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

Cogent 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

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
openaire   +3 more sources

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

International 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, S. Satish Kumar, Shobhavathy M. Thimmaiah, Janaki Rami Reddy Mudipalli, A. M. Pradeep, Srinivasan Ramamurthy, Venkat S. Iyengar   +6 more
doaj   +1 more source

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

Energies, 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

Numerical Investigation of the Influence of Axial Overlap of Blade Angle Slots on an Axial Flow Compressor Stability

Journal of Applied Fluid Mechanics, 2020
In this paper, a numerical investigation was conducted on a subsonic compressor rotor with blade angle slot casing treatments. The purpose of the investigation is to reveal the influence of axial overlap of blade angle slot on the compressor stability ...
H. Zhang, W. Liu, E. Wang, W. Chu, J. Yang, W. Zhao   +5 more
doaj  

Effect of Partial Span Aspiration on the Performance of a Transonic Axial Compressor Rotor: A Numerical Study

International Journal of Rotating Machinery, 2015
Aspiration in an axial compressor is normally regarded as sucking out the low momentum boundary layer from blade suction surface, thus lowering the chances of flow separation and consequently that of stall under off-design operation. However, the suction
Vijaykumar Jain, Quamber H. Nagpurwala, Abdul Nassar   +2 more
doaj   +1 more source

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

Applied 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, Kun Sung Park, Minsuk Choi, Jin Taek Chung   +3 more
doaj   +1 more source