scholarly journals Selection of the optimum device parameters for constant magnetic field generation

2021 ◽  
Vol 288 ◽  
pp. 01004
Author(s):  
Regina Khazieva ◽  
Maksim Ivanov

The aim of the work is to develop a device design for creating constant magnetic fields and select its parameters, select an electrical circuit for powering the device and determine how the energy efficiency of the device changes with an increase in its overall dimensions. When solving the problem, the KOMPAS-3D three-dimensional modeling system was used, the magnetic field induction was calculated using the Pascal ABC programming system, the optimal device parameters were selected using the Microsoft Excel program. Calculations have shown that the coefficient taking into account the inhomogeneous distribution of the magnetic field in the device is 0.883. The optimum ratio between the height and the radius of the cylinder, along which the emulsion flows, is h = r √ 20 hr. Using the KOMPAS-3D three-dimensional modeling system, a model of the device under development was built taking into account the obtained relationships. When using a circuit with an uncontrolled rectifier and autotransformer, the power consumed by the device is 2.67 times lower than the power consumed by the device when using a circuit with a controlled rectifier and a transformer. Energy efficiency increases significantly with the increase in device performance.

Author(s):  
R. T. Khazieva ◽  
M. D. Ivanov

THE PURPUSE. To consider the fields of application of electromagnetic treatment of water systems. To analyze the modern literature on the use of constant magnetic fields for dehydration of oil-water emulsions. To develop the design of a device for generating constant magnetic fields and select its parameters. To select the electrical circuit for powering the device. To determine how the energy efficiency of the device changes with an increase in its overall dimensions. METHODS. When solving the problem, the KOMPAS-3D three-dimensional modeling system was used, the magnetic field induction was calculated using the PascalABC programming system, the optimal device parameters were selected using the Microsoft Excel program. RESULTS. The article describes the relevance of the topic, considers the distribution of the magnetic field in the device under development, determines the optimal design parameters for this device and selects the electrical power circuit. CONCLUSION. Calculations have shown that the coefficient taking into account the inhomogeneous distribution of the magnetic field in the device is 0.883. Using the KOMPAS-3D three-dimensional modeling system, a model of the device under development was builttaking into account the obtained relationships.When using a circuit with an uncontrolled rectifier and autotransformer, the power consumed by the device is 2.67 times lower than the power consumed by the device when using a circuit with a controlled rectifier and a transformer. Energy efficiency increases significantly with the increase in device performance.


2021 ◽  
Author(s):  
Tawfiq J Jaber

Three-dimensional modeling of SiGe by the traveling solvent method in the presence of magnetic field and rotating crucible


2021 ◽  
Author(s):  
Tawfiq J Jaber

Three-dimensional modeling of SiGe by the traveling solvent method in the presence of magnetic field and rotating crucible


2012 ◽  
Vol 30 (4) ◽  
pp. 711-724 ◽  
Author(s):  
R. A. Treumann ◽  
W. Baumjohann

Abstract. Three-dimensional electron phase-space holes are shown to have positive charges on the plasma background, which produce a radial electric field and force the trapped electron component into an azimuthal drift. In this way electron holes generate magnetic fields in the hole. We solve the cylindrical hole model exactly for the hole charge, electric potential and magnetic field. In electron holes, the magnetic field is amplified on the flux tube of the hole; equivalently, in ion holes the field would be decreased. The flux tube adjacent to the electron hole is magnetically depleted by the external hole dipole field. This causes magnetic filamentation. It is also shown that holes are massive objects, each carrying a finite magnetic moment. Binary magnetic dipole interaction of these moments will cause alignment of the holes into chains along the magnetic field or, in the three-dimensional case, produce a magnetic fabric in the volume of hole formation. Since holes, in addition to being carriers of charges and magnetic moments, also have finite masses, they behave like quasi-particles, performing E × B, magnetic field, and diamagnetic drifts. In an inhomogeneous magnetic field, their magnetic moments experience torque, which causes nutation of the hole around the direction of the magnetic field, presumably giving rise to low frequency magnetic modulations like pulsations. A gas of many such holes may allow for a kinetic description, in which holes undergo binary dipole interactions. This resembles the polymeric behaviour. Both magnetic field generation and magnetic structure formation are of interest in auroral, solar coronal and shock physics, in particular in the problem of magnetic field filamentation in relativistic foreshocks and cosmic ray acceleration.


2006 ◽  
Vol 99 (8) ◽  
pp. 08P503 ◽  
Author(s):  
Mauro Zucca ◽  
Gabriella Crotti ◽  
Oriano Bottauscio ◽  
Xiangping Li ◽  
Massimo Di Pardo ◽  
...  

2007 ◽  
Vol 14 (5) ◽  
pp. 053502 ◽  
Author(s):  
Hai-Bin Tang ◽  
Jie Yao ◽  
Hai-Xing Wang ◽  
Yu Liu

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