Effects of sweep angles on turbulent separation behaviors induced by blunt fin

Gang, Dundian; Yi, Shihe; Zhang, Feng; Niu, Haibo

doi:10.1016/j.cja.2021.03.032

Cited by 4 publications

(3 citation statements)

References 22 publications

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“…The field measurement data is shown in Figure 21. 33,34 Experimental conclusion. The test results show that the axial inlet type cyclone separator system has high separation efficiency, and has obvious advantages in space utilization and gas-liquid separation.…”

Section: Indoor Simulation Testmentioning

confidence: 97%

Optimization analysis and Field application of gas-liquid cyclone separator based on CFX

Wang

Xie

Wang³

et al. 2022

Advances in Mechanical Engineering

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At present, large and cumbersome gravity sedimentation separators are generally used in the separation of liquid and gas in the wellbore during emergency blowout or circulating degassing in drilling, and innovation and improvement are urgently needed. In this paper, CFX commercial simulation software is used to analyze the cut-in cyclone separator, and the axial inlet type cyclone separator with different length ratios of cylinder-cone section in swirling flow section under different flow channel structures, and carried out indoor simulation and field test verification. The results show that the axial inlet type cyclone separator is more suitable for gas-liquid separation than the cut-in cyclone separator, and the separation can be well improved by increasing the length-diameter ratio of the cyclone section under the cut-in cyclone separator structure. Finally, the experimental separation efficiency reached 99%, and the field test separation efficiency reached more than 98%. This greatly improves the separation efficiency of liquid and gas during the drilling process, and also plays a certain role in promoting the separation of gas and liquid in the entire oil and gas industry.

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Section: Indoor Simulation Testmentioning

confidence: 97%

Optimization analysis and Field application of gas-liquid cyclone separator based on CFX

Wang

Xie

Wang³

et al. 2022

Advances in Mechanical Engineering

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“…As for the investigation of three-dimensional protrusions on bodies, several canonical configurations are simplified to provide a fundamental understanding [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31], such as the semi-conical model, compression ramp, unswept/swept sharp/blunt fin [12][13][14][15][16][17][18][19][20], and double sharp fin [21][22][23][24][25][26][27][28][29][30][31]. Hypersonic flows over these configurations lead to complex flow phenomena including shock wave/shock wave and shock wave/boundary layer interactions, horseshoe vortices, separations, and reattachments.…”

Section: Introductionmentioning

confidence: 99%

“…The flow structures and aerodynamic load features associated with blunt swept fins and sharp fins have been studied in the past decades [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. In the classical flowfield upstream of a blunt fin, the lambda-shaped shock wave structure consists of a separation shock wave and a trailing shock wave, both of which intersect with the inviscid bow shock at the triple point.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Aerodynamic Heating Characteristics of the Cantilevered Injection System for Oblique Detonation Engine Inlets

Yang,

Lin,

et al. 2023

Aerospace

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This paper investigates the flowfield patterns and distributions of surface heat flux of the cantilevered injection system for oblique detonation engine inlets. Three-dimensional complex shock wave/boundary layer interaction and shock wave/shock wave interaction between injectors are studied by solving Navier–Stokes equations under laminar flow conditions. The results indicate that there are three possible positions of localized peak heat flux, i.e., the leading edge of the injector near the bottom, the inlet wall surface below the injector, and the downstream of the injector sidewall. All the regions of high heat flux are related to flow reattachment or stagnation. Three types of flow patterns are observed along the inlet surface, i.e., partial separation, completely regular separation, and completely nonregular separation, resulting in increasingly complex distributions of heat flux. The localized peak heat flux which appears at the leading edge and the sidewalls of the injectors can reach values dozens of times higher than the undisturbed region within the interaction region.

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Decomposition of mean skin friction in incident shock wave/turbulent boundary layer interaction flows at Mach 2.25

Jian-nan

Tong

et al. 2023

Chinese Journal of Aeronautics

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Effects of sweep angles on turbulent separation behaviors induced by blunt fin

Cited by 4 publications

References 22 publications

Optimization analysis and Field application of gas-liquid cyclone separator based on CFX

Optimization analysis and Field application of gas-liquid cyclone separator based on CFX

Numerical Study on the Aerodynamic Heating Characteristics of the Cantilevered Injection System for Oblique Detonation Engine Inlets

Decomposition of mean skin friction in incident shock wave/turbulent boundary layer interaction flows at Mach 2.25

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