Results 1 to 10 of about 55,584 (294)

Stability Enhancement and Noise Reduction of an Axial Compressor with Foam Metal Casing Treatment

open access: yesAerospace, 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

Investigation of Vaned-Recessed Casing Treatment in a Low-Speed Axial-Flow Compressor, Part II: Unsteady Results

open access: yesAerospace, 2023
In this paper, unsteady characteristics of a modified vaned-recessed casing treatment with 23.2% rotor blade tip axial chord exposure were studied numerically.
Mohammad Akhlaghi, Yahya Azizi
doaj   +1 more source

Numerical Investigation on a Axial Slot Casing Treatment of a Large Circumferential Interval and Small Opening Area

open access: yesEnergies, 2021
Axial slot casing treatment is a common method to extend the stall margin of a compressor. Based on the mechanism of unsteady flow control, this paper redesigns axial slots with large circumferential interval and small opening area. To test the effect of
Zepeng Liu, Guoping Huang, Omer Musa
doaj   +1 more source

Study of Circumferential Grooved Casing Treatment on Cascade Aerodynamic Performance

open access: yesAerospace, 2023
To explore the influence of circumferential grooved casing treatment on subsonic cascade performance, a numerical simulation of subsonic cascade was conducted.
Jingbo Tan   +4 more
doaj   +1 more source

Effect of Inclination Grooves on Axial Flow Compressor Stability: An Experimental and Numerical Simulation Study [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
In the present study, various groove casing treatments were evaluated under a high-speed subsonic axial flow compressor using experimental and numerical simulation methods.
W. H. Liu   +3 more
doaj   +1 more source

Multi-Objective Optimization of Circumferential Groove Casing Treatment in an Ultra-Highly Loaded Low-Reaction Transonic Compressor Rotor

open access: yesFrontiers in Energy Research, 2022
This study concerns a multi-objective optimization of circumferential single grooved casing treatment for a low-reaction transonic rotor with ultra-high loading. The axial location, width and depth of the groove are investigated as design variables.
Shengli Ding   +3 more
doaj   +1 more source

Evaluation on Application Effect of MUIL in Tarim Oilfield

open access: yesCejing jishu, 2023
With the deepening of the exploration and development of Tarim oilfield, the number of old wells has increased year by year, and the number of inefficient and ineffective old wells are increasing. Therefore, the comprehensive treatment needs of old wells
WANG Dongdong, LIU Shiwei, HOU Zhenyong
doaj   +1 more source

Shear compression deformation test and deformation prevention practice of casing in shale gas horizontal wells

open access: yesNatural Gas Industry B, 2021
With the rapid development of shale gas exploration and development in China, casing deformation in shale gas horizontal wells happens frequently, which directly impacts the development efficiency and benefits of shale gas.
Ping Zhang   +10 more
doaj   +1 more source

Study on the Mechanical Mechanism and Prevention Method of Casing Moving up: Taking the Jidong Oilfield as an Example

open access: yesGeofluids, 2022
In the production process of oilfields, the proportion of oil and water wells scrapped or overhauled by casing moving up continues to increase, especially in some onshore oilfields near the coast, which is more prominent.
Yan Zhou   +7 more
doaj   +1 more source

Influence of Axial Position of Self-Circulating Casing Treatment on the Performances of a Centrifugal Pump at Low Mass Flow Conditions [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Centrifugal pumps often deviate from its design condi-tion during its operation and work at low mass flow conditions. Under such circumstances, unstable flow phenomena may be generated, affecting the efficient and stable operation of pumps. In this paper,
H. Liu   +6 more
doaj   +1 more source

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