Results 21 to 30 of about 811 (268)

The Differential Entropy Generation Rate as a Unified Measure for Both the Stability and Efficiency of an Axial Compressor

Machines, 2023
Stability and efficiency are the two most important performance indicators of highly loaded aviation axial compressors; however, they often cannot be achieved simultaneously.
Jingyuan Ma, Feng Lin
doaj   +1 more source

Effect of Circumferential Single Casing Groove Location on the Flow Stability under Tip-Clearance Effect in a Transonic Axial Flow Compressor Rotor

Energies, 2021
Numerical simulations have been performed to study the effect of the circumferential single-grooved casing treatment (CT) at multiple locations on the tip-flow stability and the corresponding control mechanism at three tip-clearance-size (TCS) schemes in
Xiaoxiong Wu, Bo Liu, Botao Zhang, Xiaochen Mao   +3 more
doaj   +1 more source

Mechanism Underlying the Effect of Self-Circulating Casings with Different Circumferential Coverage Ratios on the Aerodynamic Performance of a Transonic Centrifugal Compressor

Aerospace, 2023
The aim of this research was to explore the mechanisms underlying the effect of self-circulating casing treatment with different circumferential coverage ratios on the aerodynamic performance of a transonic centrifugal compressor.
Haoguang Zhang, Hao Wang, Qi Li, Fengyu Jing, Wuli Chu   +4 more
doaj   +1 more source

Numerical Investigation of Transient Flow Characteristics in a Centrifugal Compressor Stage with Variable Inlet Guide Vanes at Low Mass Flow Rates

Energies, 2021
This study numerically investigates the beneficial effects of positive pre-swirl on the aerodynamic performance and internal flow field in a centrifugal compressor stage with variable inlet guide vanes (VIGVs) at low mass flow rates.
Shuai Li, Yan Liu, Mohammad Omidi, Chuang Zhang, Hongkun Li   +4 more
doaj   +1 more source

Stall Margin Improvements of Conventional Axial Flow Fans with the Reformed Casingtreatments.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1998
At the first part of this paper, the experiments and results to the blowing and suction on a fan are presented, and it is found that blowing toward the down stream direction are more effective and blowing location is suitable on the leading edge side of blades.
NISHIOKA, Kiyoshi, KURODA, Hiromoto, OBATA, Shigeo, TAKEISHI, Masayuki, CHIMURA, Osamu   +4 more
openaire   +1 more source

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

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  

Parametric Research and Aerodynamic Characteristic of a Two-Stage Transonic Compressor for a Turbine Based Combined Cycle Engine

Aerospace, 2022
This paper researches the parametric optimization of a two-stage transonic compressor having a large air bypass at partial rotating speed according to flow analysis for a turbine-based combined cycle engine (TBCC).
Hengtao Shi
doaj   +1 more source

Stability management of high speed axial flow compressor stage through axial extensions of bend skewed casing treatment

Propulsion and Power Research, 2016
This paper presents the experimental results to understand the performance of moderately loaded high speed single stage transonic axial flow compressor subjected to various configurations of axial extensions of bend skewed casing treatment with moderate ...
DilipkumarBhanudasji 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

Active Flow Control in an Axial Compressor: Effect of the Injection Angle [PDF]

, 2022
This Thesis work has dealt with the problem of Rotating Stall in axial flow compressor. Particularly, the work was focused on active control to delay Rotating Stall appearance; this was performed by means of air injectors placed on the compressor's ...
Gatti, Giacomo
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