The Experts below are selected from a list of 51 Experts worldwide ranked by ideXlab platform
Hiroyuki Ozoe - One of the best experts on this subject based on the ideXlab platform.
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Aerial flow in a vertical cylindrical container with thermal gradient under a vertical magnetic field
Progress in Computational Fluid Dynamics An International Journal, 2005Co-Authors: Masato Akamatsu, Mitsuo Higano, Hiroyuki OzoeAbstract:This study focuses on how Magnetising Force affects the convection of air in a vertical cylindrical container with thermal and magnetic field gradients in non-gravitational and gravitational fields. The model systems with three different thermal boundary conditions are considered in the present work and numerical computations were carried out by changing the relative location of an electric coil and container. In a non-gravitational field, the aerial flow was induced by the Magnetising Force. On the other hand, in a gravitational field, the air was driven by both gravitational and Magnetising Forces. In both fields, flow pattern and heat transfer rate greatly depended on the axial location of the electric coil. Under the specific numerical condition, the pulsating flow was observed by the coupling of gravitational and Magnetising Forces. These phenomena could be successfully explained by visualising the field of Magnetising Force and considering the mass magnetic susceptibility of air according to Curie's law.
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Effects of thermal boundary conditions on magnetically controlled air flow in a pipe
Progress in Computational Fluid Dynamics An International Journal, 2005Co-Authors: Hiroyuki OzoeAbstract:Magnetically controlled laminar air flow in a pipe was studied with applying a strong magnet field from the coil placed at the mid-length of the pipe with four kinds of thermal boundary conditions from the wall. Numerical computations were successfully carried out by solving 2-D equations with static pressure boundary condition and with ξ* from 0 to 2 × 107, which represents the strength of the magnetic field and heat flux. The results showed that the volume flow rate increased with the strength of the magnetic field for all four cases of boundary conditions studied. From the distributions of the cross-sectional Magnetising Force along the pipe length, the following various properties were derived, i.e., pressure distribution, velocity, temperature, pressure gradient distribution along the pipe length and overall air flow rate.
A.s. Kontopoulos - One of the best experts on this subject based on the ideXlab platform.
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Computation of magnetic field in Rogowski-Chattock potentiometer (RCP) compensated magnetic testers
Journal of Magnetism and Magnetic Materials, 1994Co-Authors: G.h. Shirkoohi, A.s. KontopoulosAbstract:Abstract The finite element technique was used to analyse an on-line power loss testing system based on the Rogowski- Chattock potentiometer (RCP) compensation method for use on grain-oriented electrical steel production lines. The main magnetisation and the compensation windings of the model were energised with the current values obtained from the practical model to produce a spatial magnetic flux density of 1.7 T in a 0.27 mm grain-oriented silicon iron steel sheet specimen (27M4). The computed and measured values of the Magnetising Force and the induced flux density in the sample showed good agreements. The model was solved for different Magnetising and compensating current values, and the best magnetisation condition was achieved when the compensation current was twice that of the Magnetising current.
G.h. Shirkoohi - One of the best experts on this subject based on the ideXlab platform.
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Computation of magnetic field in Rogowski-Chattock potentiometer (RCP) compensated magnetic testers
Journal of Magnetism and Magnetic Materials, 1994Co-Authors: G.h. Shirkoohi, A.s. KontopoulosAbstract:Abstract The finite element technique was used to analyse an on-line power loss testing system based on the Rogowski- Chattock potentiometer (RCP) compensation method for use on grain-oriented electrical steel production lines. The main magnetisation and the compensation windings of the model were energised with the current values obtained from the practical model to produce a spatial magnetic flux density of 1.7 T in a 0.27 mm grain-oriented silicon iron steel sheet specimen (27M4). The computed and measured values of the Magnetising Force and the induced flux density in the sample showed good agreements. The model was solved for different Magnetising and compensating current values, and the best magnetisation condition was achieved when the compensation current was twice that of the Magnetising current.
Masato Akamatsu - One of the best experts on this subject based on the ideXlab platform.
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Aerial flow in a vertical cylindrical container with thermal gradient under a vertical magnetic field
Progress in Computational Fluid Dynamics An International Journal, 2005Co-Authors: Masato Akamatsu, Mitsuo Higano, Hiroyuki OzoeAbstract:This study focuses on how Magnetising Force affects the convection of air in a vertical cylindrical container with thermal and magnetic field gradients in non-gravitational and gravitational fields. The model systems with three different thermal boundary conditions are considered in the present work and numerical computations were carried out by changing the relative location of an electric coil and container. In a non-gravitational field, the aerial flow was induced by the Magnetising Force. On the other hand, in a gravitational field, the air was driven by both gravitational and Magnetising Forces. In both fields, flow pattern and heat transfer rate greatly depended on the axial location of the electric coil. Under the specific numerical condition, the pulsating flow was observed by the coupling of gravitational and Magnetising Forces. These phenomena could be successfully explained by visualising the field of Magnetising Force and considering the mass magnetic susceptibility of air according to Curie's law.
Mitsuo Higano - One of the best experts on this subject based on the ideXlab platform.
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Aerial flow in a vertical cylindrical container with thermal gradient under a vertical magnetic field
Progress in Computational Fluid Dynamics An International Journal, 2005Co-Authors: Masato Akamatsu, Mitsuo Higano, Hiroyuki OzoeAbstract:This study focuses on how Magnetising Force affects the convection of air in a vertical cylindrical container with thermal and magnetic field gradients in non-gravitational and gravitational fields. The model systems with three different thermal boundary conditions are considered in the present work and numerical computations were carried out by changing the relative location of an electric coil and container. In a non-gravitational field, the aerial flow was induced by the Magnetising Force. On the other hand, in a gravitational field, the air was driven by both gravitational and Magnetising Forces. In both fields, flow pattern and heat transfer rate greatly depended on the axial location of the electric coil. Under the specific numerical condition, the pulsating flow was observed by the coupling of gravitational and Magnetising Forces. These phenomena could be successfully explained by visualising the field of Magnetising Force and considering the mass magnetic susceptibility of air according to Curie's law.