Study of Magnetic Field Effects on the Oxygen Transfer in Liquid Lead Cavity Flow Using the Lattice Boltzmann Method

Kermani, Emad Pouryazdanpanah; Chen, Yitung

doi:10.1115/1.4045643

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…Many studies have reported that the behaviors of oxygen in water can be affected by an external magnetic field which would enhance the dissolving efficiency of the oxygen or the interface flow velocity 17 – 23 . Most of the results show that when a field strength less than 1 T is applied to the solution, the concentration of the dissolved oxygen is increased up to 50%.…”

Section: Introductionmentioning

confidence: 99%

The effect of magnetic field on the dynamics of gas bubbles in water electrolysis

Chen

2021

Sci Rep

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This study determines the effect of the configuration of the magnetic field on the movement of gas bubbles that evolve from platinum electrodes. Oxygen and hydrogen bubbles respectively evolve from the surface of the anode and cathode and behave differently in the presence of a magnetic field due to their paramagnetic and diamagnetic characteristics. A magnetic field perpendicular to the surface of the horizontal electrode causes the bubbles to revolve. Oxygen and hydrogen bubbles revolve in opposite directions to create a swirling flow and spread the bubbles between the electrodes, which increases conductivity and the effectiveness of electrolysis. For vertical electrodes under the influence of a parallel magnetic field, a horizontal Lorentz force effectively detaches the bubbles and increases the conductivity and the effectiveness of electrolysis. However, if the layout of the electrodes and magnetic field results in upward or downward Lorentz forces that counter the buoyancy force, a sluggish flow in the duct inhibits the movement of the bubbles and decreases the conductivity and the charging performance. The results in this study determine the optimal layout for an electrode and a magnetic field to increase the conductivity and the effectiveness of water electrolysis, which is applicable to various fields including energy conversion, biotechnology, and magnetohydrodynamic thruster used in seawater.

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Section: Introductionmentioning

confidence: 99%

The effect of magnetic field on the dynamics of gas bubbles in water electrolysis

Chen

2021

Sci Rep

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“…On the other hand, many studies have reported that the behaviors of oxygen in water can be affected by an external magnetic field which would enhance the dissolving efficiency of the oxygen or the interface flow velocity [15][16][17][18][19][20][21] . Most of the results show that when a field strength less than 1T is applied to the solution, the concentration of the dissolved oxygen is increased up to 50%.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Magnetic Field on the Dynamics of Gas Bubbles in Water Electrolysis

Chen

2021

Preprint

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In this work, the movement of the gas bubbles evolved from the platinum electrodes in the influence of various magnetic field configurations are experimentally investigated. The oxygen and hydrogen bubbles respectively evolve from the surface of anode and cathode have distinctive behaviors in the presence of magnetic fields due to their paramagnetic and diamagnetic characteristics. The magnetic field perpendicular to the surface of the horizontal electrode induces the revolution of the bubbles. The opposite revolution direction between the oxygen and hydrogen bubbles cause the swirling of the flow and spread out the bubbles between the electrode which enhances the conductivity and electrolysis effectiveness. On the other hand, the vertical electrodes in the influence of a parallel magnetic field induce horizontal Lorentz force which effectively spells out the bubbles and increases the conductivity and electrolysis effectiveness as well. However, when the layouts of the electrode and magnetic field result in upward or downward Lorentz forces which competes with the buoyancy force, the sluggish flow in the duct would hinder the movement of the bubbles and decrease the conductivity and charging performance. This phenomenon affects the corresponding natural convection and mass transport as well. These results propose the optimal layout of the electrode and magnetic field which is useful to enhance the conductivity or the effectiveness in water electrolysis.

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Detection and optical imaging of induced convection under the action of static magnetic field gradient in a non-conducting diamagnetic fluid

Morarka

2022

Pramana - J Phys

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The report elaborates for the first time visual observations of induced convections in a non-conducting diamagnetic fluid under the action of static gradient magnetic field in the absence of thermal gradients and the techniques employed to observe and record them. Suspension of Deionized (DI) and double distilled water and Lycopodium pollen grains was used as the fluid in a test tube. Permanent magnets having field strength of 0.12T each were used to provide the static gradient magnetic field. The suspension filled test tube was kept in a room temperature water bath. The convections were visually observed and recorded using travelling microscope attached with a web camera. Various geometrical configurations of magnets in the vicinity of test tube provided different types of magnetic gradient shapes. These gradients were responsible for the occurrence of different types of orientations in the convective flows in the test tube. Convections were observed over a range of fluid volumes from 0.2ml-10ml. The experimentally observed results provide proof of concept that irrespective of the weak interactions of diamagnetic fluids with magnetic fields, these effects can be easily observed and recorded with the use of low tech laboratory equipments.

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Study of Magnetic Field Effects on the Oxygen Transfer in Liquid Lead Cavity Flow Using the Lattice Boltzmann Method

Cited by 5 publications

References 25 publications

The effect of magnetic field on the dynamics of gas bubbles in water electrolysis

The effect of magnetic field on the dynamics of gas bubbles in water electrolysis

The Effect of Magnetic Field on the Dynamics of Gas Bubbles in Water Electrolysis

Detection and optical imaging of induced convection under the action of static magnetic field gradient in a non-conducting diamagnetic fluid

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