Results 11 to 20 of about 55,584 (294)

Numerical Investigation for the Impact of Single Groove on the Stall Margin Improvement and the Unsteadiness of Tip Leakage Flow in a Counter-Rotating Axial Flow Compressor

open access: yesEnergies, 2017
A low-speed counter-rotating axial flow compressor (CRAC) with single circumferential grooved casing treatment (CT) was investigated numerically. Both steady and time-accurate numerical calculations were performed to study the effects of the single ...
Xiaochen Mao, Bo Liu, Hang Zhao
doaj   +1 more source

Investigation of Vaned-Recessed Casing Treatment in a Low-Speed Axial Flow Compressor, Part I: Time-Averaged Results

open access: yesAerospace, 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

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

open access: yesMachines, 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

Investigation of Design Features of Compressor Casing Treatment

open access: yesArchive of Mechanical Engineering, 2014
Obróbka obudowy kompresora, polegajaca na wykonaniu obwodowych rowków ponad szczytem łopaty wirnika, jest stosowana dla poprawy własciwosci roboczych kompresora.
Nezym Vitaliy
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

A suitable case for treatment [PDF]

open access: yesQJM, 2007
In August 1982, I finished a six-month stint as a senior house officer in obstetrics, and brought my career as a hospital doctor to an end. Since then, I have worked mainly in general practice and as an educator. I have only had the typical contacts that you would expect a GP to have with the world of hospital medicine.
openaire   +2 more sources

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

Treatment Strategies for Chronic Cases [PDF]

open access: yesPain Research and Management, 2003
The treatment of chronic somatic pain, including pain referred to the head, neck, shoulder girdle and upper limb from somatic structures, is addressed. Levels of evidence for the various treatments that have been prescribed for chronic whiplash associated disorders are considered.
openaire   +3 more sources

The influence of a coupled casing on the performance of a multistage compressor under inlet distortion conditions

open access: yesAIP Advances, 2023
In order to increase the stalling margin of a compressor under different inlet conditions, especially under inlet distortion conditions, a new coupled casing processing structure is proposed in this paper.
Hong Xie   +3 more
doaj   +1 more source

Method of Improving Stability of a Highly-Loaded Axial Compressor Stage by Coupling Different Casing Treatments [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Casing treatment is a powerful method for improving the stability of aircraft compressors. An optimized slot-type casing treatment was tested on the first rotor of a highly-loaded two-stage compressor, and the results showed that the casing treatment ...
Y. Chen, A. Lin, H. Zhang, W. Chu
doaj   +1 more source

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