Gas-liquid two-phase flow patterns in the wake of a submerged nozzle under co-flow condition

Mao, Ning; Kang, Can; Ding, Kejin; Cao, Qian

doi:10.1016/j.ijmultiphaseflow.2021.103604

Cited by 11 publications

(6 citation statements)

References 33 publications

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“…Taking Model 1 as an example, according to the wettability classification criteria [16], the contact angles of the research model were set to 45 • , 75 • , and 120 • , respectively, to simulate the super hydrophilic, slightly water-wet, and gas wetting states.…”

Section: Wettabilitymentioning

confidence: 99%

“…Yang established a fully coupled model of two-phase seepage and coal deformation based on gas dynamic diffusion [14], and concluded that simplifying coalbed methane extraction as a single-phase flow process will overestimate gas production in the early stage. Zeguai and Mao used experimental and numerical simulation methods to study the flow characteristics of a two-phase mixture of gas and water in a vertical pipeline [15,16]. The macroscopical multi-physical coupling seepage model established by the above scholars has a certain guiding role in the prediction of coalbed methane productivity, but the research on the microscopic seepage mechanism of coalbed methane is not sufficient.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study on Numerical Simulation of Gas–Water Two-Phase Micro-Seepage Considering Fluid–Solid Coupling in the Cleats of Coal Rocks

Qian,

Xie,

Zhang

et al. 2024

Energies

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The increasing demand for natural gas energy will promote unconventional natural gas, such as coal seam gas and shale gas, to play a key role in future energy development. The mechanical properties of coal seams are weaker compared with conventional natural gas reservoirs. The fluid–solid coupling phenomenon exists widely at the pore scale and macro scale of coal seams, and runs through the whole process of coalbed gas exploitation. The objective of this study is to establish a microscale gas–water flow model for coalbed methane considering fluid structure coupling. Frist, this study used scanning electron microscopy (SEM) to obtain microscopic pore images of coal rocks. Then, we constructed a numerical model to simulate the movement of coalbed methane and water within the scale of coal cleats based on the Navier–Stokes equation, phase field method, and solid mechanics theory. Finally, we analyzed the effects of injection pressure and wettability on the microscopic two-phase seepage characteristics and displacement efficiency of coal. Our research shows that when the injection pressure is increased from 60 kPa to 120 kPa, the displacement completion time is shortened from 1.3 × 10−4 s to 7 × 10−5 s, and the time is doubled, resulting in a final gas saturation of 98%. The contact angle increases from 45° to 120°, and the final gas saturation increases from 0.871 to 0.992, an increase of 12.2%.

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Section: Wettabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on Numerical Simulation of Gas–Water Two-Phase Micro-Seepage Considering Fluid–Solid Coupling in the Cleats of Coal Rocks

Qian,

Xie,

Zhang

et al. 2024

Energies

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show abstract

“…2 Furthermore, the flow parameters of multiphase flow can be characterized using interface structural characteristics. 35 For multiphase separation, in an area where the interface can be hazardous, the interface structural characteristics can be regulated for oil−water and gas−liquid separation. 15 The physical and chemical interface methods are discussed in Section 6.…”

Section: Application and Regulation Of Interface Behavior And Phenomenamentioning

confidence: 99%

“…An interface can provide favorable conditions for enhancing oil recovery such as reduction in IFT, change in the wettability of reservoir rocks, and foam flooding . Furthermore, the flow parameters of multiphase flow can be characterized using interface structural characteristics . For multiphase separation, in an area where the interface can be hazardous, the interface structural characteristics can be regulated for oil–water and gas–liquid separation .…”

Section: Application and Regulation Of Interface Behavior And Phenomenamentioning

confidence: 99%

“…56 An increase in bubble size subsequently increases liquid viscosity and IFT. 57 Mao et al 35 further described the dynamics behavior of bubbles using the interface characteristics of bubbles in a multiphase flow. Therefore, the structure and behavior of the interface can influence and describe the multiphase flow characteristics.…”

Section: Application and Regulation Of Interface Behavior And Phenomenamentioning

confidence: 99%

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Effect of Interface Structure and Behavior on the Fluid Flow Characteristics and Phase Interaction in the Petroleum Industry: State of the Art Review and Outlook

Hong

Wang

et al. 2023

Energy Fuels

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As the global oil market continues to tighten, there is an increasing focus on enhancing oil recovery. However, enhanced oil recovery technologies require the addition of chemical components such as surfactants, alkalis, and polymers to the oil reservoir. These chemical components change the interface structure and affect fluid flow characteristics and phase interactions through adsorption and other behaviors, thus affecting the production efficiency and energy consumption of oil recovery, gathering, processing, and transportation. Particularly, a stable interface is formed during oil recovery that can sharply increase the difficulty of phase separation during oil gathering and processing, thereby considerably decreasing the separation efficiency. Therefore, it is crucial to understand the effect of the interface structure and behavior on fluid flow characteristics and phase interactions for the advancement of the petroleum industry. Herein, the application and regulation of interfaces in the petroleum industry for fluid flow characteristics and phase interactions are reviewed, approaches for characterizing interface characteristics are critically analyzed and discussed, mechanisms of various factors influencing interface formation and stability through phase interactions are investigated, and methods of interface inhibition and destruction are summarized. Moreover, the latest techniques for applied interface formation in the petroleum industry are discussed, and the challenges and research prospects related to interfaces are summarized, providing references for enriching theoretical research in the field of interfaces within the petroleum industry and efficiently optimizing the production and operation of the petroleum industry.

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Experimental study of jet and cavity coupling under vertical motion of underwater vehicle

Wang,

Zhang

et al. 2024

Applied Ocean Research

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Gas-liquid two-phase flow patterns in the wake of a submerged nozzle under co-flow condition

Cited by 11 publications

References 33 publications

Study on Numerical Simulation of Gas–Water Two-Phase Micro-Seepage Considering Fluid–Solid Coupling in the Cleats of Coal Rocks

Study on Numerical Simulation of Gas–Water Two-Phase Micro-Seepage Considering Fluid–Solid Coupling in the Cleats of Coal Rocks

Effect of Interface Structure and Behavior on the Fluid Flow Characteristics and Phase Interaction in the Petroleum Industry: State of the Art Review and Outlook

Experimental study of jet and cavity coupling under vertical motion of underwater vehicle

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