Investigation of solid/liquid interface evolution in the solidification process of liquid metal in an annulus crucible at the presence of static magnetic field: numerical study

Ahmadpour, Vahid; Mirzaei, Iraj; Rezazadeh, Sajad; Ahmadi, Nima

doi:10.1007/s40430-019-1906-5

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…Frequent studies concerning unsteady free convective flows under distinct substantial appearance have been done by numerous investigators, for instance, Jha and Apere 26 and Jha with Yusuf. 27 In a heated vertical annulus, the joint effects of magnetic field and thermal Radiation on fluid flow have been studied by Wen-Li et al 28 This numerical study was mentioned by Ahmadpour et al 29 in a vertical 3D annulus. They discussed several vital parameters, like Hartmann and Rayleigh numbers.…”

Section: Introductionmentioning

confidence: 99%

Significance of time‐dependent magnetohydrodynamic transient free convective flow in vertical annuli: An analytical approach with the finite Hankel transform

Maurya

Singh

2021

Heat Trans

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An analytical study is accomplished by using the Finite Hankel Transform Technique for the variation of the temperature and the velocity profile with several nondimensional parameters. In this problem, an electrically conducting fluid has been considered in the vertical concentric annulus, with a perpendicular radial magnetic field. Furthermore, a closed and exact type of expression for the velocity and the temperature are received in the form of Bessel functions of both kinds (first and second). The impact of emerging parameters in this model, such as time, Hartmann number, Prandtl number, and the annular gap between the cylinders, is discussed through graphs, whereas the numerical values of the skin friction, mass flux, and the Nusselt number are given in the tabular form. As a consequence of this, it is detected that the velocity and temperature distributions are increasing continuously with an enhanced time scale. Eventually, it gains its steady state very quickly. Moreover, the impact of the Prandtl number and the Hartmann number leads to a decrease in the velocity profiles.

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Section: Introductionmentioning

confidence: 99%

Significance of time‐dependent magnetohydrodynamic transient free convective flow in vertical annuli: An analytical approach with the finite Hankel transform

Maurya

Singh

2021

Heat Trans

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“…This type of reservoir is especially developed in the Middle East or central Asia [3]. Acid fracturing is one of the most effective measures for carbonate stimulation [4,5]. The acidetching fracture conductivity after acid fracturing treatment is a key factor affecting oil and gas production, and is a key parameter in the acid fracturing design of carbonate reservoirs [6,7].…”

Section: Introductionmentioning

confidence: 99%

Acid System and Stimulation Efficiency of Multistage Acid Fracturing in Porous Carbonate Reservoirs

et al. 2022

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With little to no natural fracture development and the high calcite content in porous carbonate reservoirs, for multistage acid fracturing, different fluids are used to form a viscous fingering in the fracture, thus enhancing the degree of nonuniform etching. However, existing studies on multistage acid fracturing mainly focused on the combination of fracturing fluid and acid, which is less specific for porous carbonate rocks. Here, the rheological properties of five fluids, including guar-based fluid, cross-linked guar, gelled acid, cross-linked acid, and diverting acid, were studied at each temperature condition, and the viscosity relationship between each fluid was clarified. Based on the rheological properties, the differences between the seven liquid combinations on the etched morphology of the fracture walls were studied and analyzed. The conductivity of the seven acid-etched fractures under different closure stress was simulated. The experimental results showed that the viscosity relationships between the fluids at different temperatures were cross-linked guar > cross-linked acid > diverting acid (spent acid) > gelled acid > guar-based liquid > diverting acid (fresh acid). Because cross-linked acid has higher viscosity than gelled acid, it can form more obvious viscous fingering with a variety of liquids, which is more suitable for acid fracturing stimulation of porous carbonate reservoirs. In addition, the combination of cross-linked and diverting acids was screened out. The multistage alternate injection of this fluid combination could form tortuous and complex etching channels, and its acid-etching fracture conductivity was significantly higher than that of other fluid combinations at different closure stress. In this study, we optimized the fluid combination of porous carbonates and clarified the effect and mechanism of nonuniform etching to provide guidance for the fluid combination selection of multistage alternate acid fracturing process for porous carbonate reservoirs.

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Magnetic influence on phase change materials for optimized thermal energy storage: A comprehensive review and prospective insights

Mousavi,

Khanmohammadi,

Rabienataj Darzi

2024

Journal of Energy Storage

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Investigation of solid/liquid interface evolution in the solidification process of liquid metal in an annulus crucible at the presence of static magnetic field: numerical study

Cited by 5 publications

References 29 publications

Significance of time‐dependent magnetohydrodynamic transient free convective flow in vertical annuli: An analytical approach with the finite Hankel transform

Significance of time‐dependent magnetohydrodynamic transient free convective flow in vertical annuli: An analytical approach with the finite Hankel transform

Acid System and Stimulation Efficiency of Multistage Acid Fracturing in Porous Carbonate Reservoirs

Magnetic influence on phase change materials for optimized thermal energy storage: A comprehensive review and prospective insights

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