Hydromagnetic unsteady slip stagnation flow of nanofluid with suspension of mixed bio-convection

Kumar, Rakesh; Sood, Shilpa; Raju, C.S.K.; Shehzad, S. A.

doi:10.1016/j.jppr.2018.10.001

Cited by 21 publications

(10 citation statements)

References 38 publications

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“…e superconducting ball floats under the Meissner effect and the suspension force and gravity reach a balance; by adjusting the current in the upper and lower superconducting coils, the magnetic force gradient in the space area can be adjusted, that is, the stiffness of the "spring". When the gravity changes slightly, the superconducting ball will be displaced in the vertical direction, reach a new equilibrium position, so the distance between the upper and lower capacitor plates will change, and the measurement of gravity can be completed by the differential capacitance detection circuit [11].…”

Section: E Structure Of the Superconducting Magnetic Levitationmentioning

confidence: 99%

Simulation of the Electro-Superconducting System Based on the H Equation

Zhang

2022

Journal of Chemistry

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In order to reduce the levitation energy consumption and increase the levitation air gap, a simulation study of the electrochemistry superconducting magnetic levitation system based on the H equation is proposed. Through finite element simulation, the magnetic field distribution, current distribution, force, and other characteristics of the magnetic suspension system in the superconducting gravimeter are obtained; the relationship between the force of the superconducting ball in the magnetic field and the height of the suspension body and the current of the suspension coil is analyzed; and the penetration rate, the magnetic gradient, penetration depth, and maximum magnetic induction intensity of the superconducting spherical surface of the single-coil electrochemistry superconducting magnetic levitation system are obtained by simulation calculation. Simulation results show that, at 1 s, we start to use 0.2 s, 0.4 s, 0.6 s, and 0.8 s time, respectively, to pass current into the floating coil until it reaches 4.4 A. The magnetic gradient of the electrochemistry superconducting magnetic levitation system using a single coil is too large to meet the requirements of gravity measurement, the penetration depth is much smaller than the thickness of the superconducting sphere, and the maximum magnetic field on the surface of the superconducting sphere is much smaller than the critical magnetic field value of the superconducting material, and no loss will occur. The critical magnetic field value of the superconducting sphere is much smaller than that of the superconducting sphere. The critical magnetic field value of the material will not quench, which verifies that the H equation can simulate the superconducting magnetic levitation system well and has a high simulation accuracy and efficiency.

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Section: E Structure Of the Superconducting Magnetic Levitationmentioning

confidence: 99%

Simulation of the Electro-Superconducting System Based on the H Equation

Zhang

2022

Journal of Chemistry

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“…The stagnation point flow of a micropolar nanofluid past a circular cylinder with velocity and thermal slip was explored by Abbas et al [17]. The hydromagnetic unsteady slip stagnation flow of nanofluid with suspension of mixed bioconvection was investigated by R. Kumar et al [18]. They discussed that region λ = 0 depicts that these forces are of equal magnitude.…”

Section: Introductionmentioning

confidence: 99%

MHD Stagnation Point on Nanofluid Flow and Heat Transfer of Carbon Nanotube over a Shrinking Surface with Heat Sink Effect

2021

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This study is to investigate the magnetohydrodynamic (MHD) stagnation point flow and heat transfer characteristic nanofluid of carbon nanotube (CNTs) over the shrinking surface with heat sink effects. Similarity equations deduced from momentum and energy equation of partial differential equations are solved numerically. This study looks at the different parameters of the flow and heat transfer using first phase model which is Tiwari-Das. The parameter discussed were volume fraction nanoparticle, magnetic parameter, heat sink/source parameters, and a different type of nanofluid and based fluids. Present results revealed that the rate of nanofluid (SWCNT/kerosene) in terms of flow and heat transfer is better than (MWCNT/kerosene) and (CNT/water) and regular fluid (water). Graphically, the variation results of dual solution exist for shrinking parameter in range λc<λ≤−1 for different values of volume fraction nanoparticle, magnetic, heat sink parameters, and a different type of nanofluid. However, a unique solution exists at −1<λ<1, and no solutions exist at λ<λc which is a critical value. In addition, the local Nusselt number decreases with increasing volume fraction nanoparticle when there exists a heat sink effect. The values of the skin friction coefficient and local Nusselt number increase for both solutions with the increase in magnetic parameter. In this study, the investigation on the flow and heat transfer of MHD stagnation point nanofluid through a shrinking surface with heat sink effect shows how important the application to industrial applications.

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“…The Lewis number led to an enhanced nanoparticle concentration and an elevated density function of the microorganisms. Kumar et al studied the stagnation point problem under slip conditions of velocity and heat transfer considering a mixed convection. By conducting an unsteady solution, the Peclet number augmentation diminished the microorganism concentration.…”

Section: Introductionmentioning

confidence: 99%

Machine-Learning Enhanced Analysis of Mixed Biothermal Convection of Single Particle and Hybrid Nanofluids within a Complex Configuration

Alizadeh

Abad

Fattahi

et al. 2021

Ind. Eng. Chem. Res.

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Transport phenomena in a hybrid or single-particle nanofluid over a conical body embedded inside a porous medium are investigated. The fluid contains homogeneously mixed nanoparticles and live cells that are able to migrate, collectively sculpturing a thermo-biosolutal system. Transport processes including mixed convection as well as species and cell transfer are simulated using a similarity technique. As the problem involves a large number of parameters with complicated interactions, machine learning is applied to predict a wide range of parametric variations. The simulation data are used to build an intelligent tool based on an artificial neural network to predict the behavior of the system. This also aids the development of precise correlations for nondimensional parameters dominating the transport phenomena. The results indicate that lower values of the motile Lewis number and a higher mixed convection parameter enhance the Nusselt number. However, it is contained respectively by the increment of the Peclet number and increases in the bio Rayleigh number. It is further shown that an increase in the Prandtl number enhances the Sherwood number and makes the motile microorganisms more uniform. The Peclet number directly influences the transport of heat, mass, and microorganisms. This study clearly demonstrates the abilities of combining numerical simulations with machine learning to significantly extend and enrich analysis of problems with large numbers of variables. The findings also pave the way for predicting behaviors of complex thermo-biosolutal systems without resorting to computationally demanding simulations.

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Hydromagnetic unsteady slip stagnation flow of nanofluid with suspension of mixed bio-convection

Cited by 21 publications

References 38 publications

Simulation of the Electro-Superconducting System Based on the H Equation

Simulation of the Electro-Superconducting System Based on the H Equation

MHD Stagnation Point on Nanofluid Flow and Heat Transfer of Carbon Nanotube over a Shrinking Surface with Heat Sink Effect

Machine-Learning Enhanced Analysis of Mixed Biothermal Convection of Single Particle and Hybrid Nanofluids within a Complex Configuration

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