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Significance of Polarization Charges and Isomagnetic Surface in Magnetohydrodynamics.

Liang ZX, Liang Y - PLoS ONE (2015)

Bottom Line: We discuss this topic and find that in the study of the frozen-in field lines concept, the effects of inductive and capacitive reactance have been omitted.If a fluid does not change its density distribution and shape (can be regarded as a quasi-rigid body) and moves along isomagnetic surface, it can freely traverse magnetic field lines without any magnetic drag, no matter how strong the magnetic field is.Besides theoretical analysis, we also present experimental results to support our analysis.

View Article: PubMed Central - PubMed

Affiliation: 18-4-102 Shuixiehuadu, Zhufengdajie, Shijiazhuang, Hebei, 050035, China.

ABSTRACT
From the frozen-in field lines concept, a highly conducting fluid can move freely along, but not traverse to, magnetic field lines. We discuss this topic and find that in the study of the frozen-in field lines concept, the effects of inductive and capacitive reactance have been omitted. When admitted, the relationships among the motional electromotive field, the induced electric field, the eddy electric current, and the magnetic field becomes clearer. We emphasize the importance of isomagnetic surfaces and polarization charges, and show analytically that whether a conducting fluid can freely traverse magnetic field lines or not depends solely on the magnetic gradient along the path of the fluid. If a fluid does not change its density distribution and shape (can be regarded as a quasi-rigid body) and moves along isomagnetic surface, it can freely traverse magnetic field lines without any magnetic drag, no matter how strong the magnetic field is. Besides theoretical analysis, we also present experimental results to support our analysis. The main purpose of this work is to correct a fallacy among some astrophysicists.

No MeSH data available.


Schematic figure of drive experimental device.The unit of length is millimeter. The belt drives the rotation of the platform and magnet; the other components are stationary.
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pone.0136936.g007: Schematic figure of drive experimental device.The unit of length is millimeter. The belt drives the rotation of the platform and magnet; the other components are stationary.

Mentions: To verify the special significance of isomagnetic surface, we conducted a series of magnetohydrodynamic experiments. The configuration of the device is the same as that of Fig 3. For simplicity and clarity, the experiments were recorded and the videos can be viewed on YouTube or Tudou (for Chinese). Figs 7 and 8 depict the device configurations and the sizes of the main components. Apart from the magnet, all components are made of non-magnetic material (plastic or copper). The mercury was placed in a cylindrical trough surrounding a rotating platform. At the magnet surface, the magnetic field intensity is about 0.6 T. The rotational rates are shown in the relevant videos.


Significance of Polarization Charges and Isomagnetic Surface in Magnetohydrodynamics.

Liang ZX, Liang Y - PLoS ONE (2015)

Schematic figure of drive experimental device.The unit of length is millimeter. The belt drives the rotation of the platform and magnet; the other components are stationary.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4556340&req=5

pone.0136936.g007: Schematic figure of drive experimental device.The unit of length is millimeter. The belt drives the rotation of the platform and magnet; the other components are stationary.
Mentions: To verify the special significance of isomagnetic surface, we conducted a series of magnetohydrodynamic experiments. The configuration of the device is the same as that of Fig 3. For simplicity and clarity, the experiments were recorded and the videos can be viewed on YouTube or Tudou (for Chinese). Figs 7 and 8 depict the device configurations and the sizes of the main components. Apart from the magnet, all components are made of non-magnetic material (plastic or copper). The mercury was placed in a cylindrical trough surrounding a rotating platform. At the magnet surface, the magnetic field intensity is about 0.6 T. The rotational rates are shown in the relevant videos.

Bottom Line: We discuss this topic and find that in the study of the frozen-in field lines concept, the effects of inductive and capacitive reactance have been omitted.If a fluid does not change its density distribution and shape (can be regarded as a quasi-rigid body) and moves along isomagnetic surface, it can freely traverse magnetic field lines without any magnetic drag, no matter how strong the magnetic field is.Besides theoretical analysis, we also present experimental results to support our analysis.

View Article: PubMed Central - PubMed

Affiliation: 18-4-102 Shuixiehuadu, Zhufengdajie, Shijiazhuang, Hebei, 050035, China.

ABSTRACT
From the frozen-in field lines concept, a highly conducting fluid can move freely along, but not traverse to, magnetic field lines. We discuss this topic and find that in the study of the frozen-in field lines concept, the effects of inductive and capacitive reactance have been omitted. When admitted, the relationships among the motional electromotive field, the induced electric field, the eddy electric current, and the magnetic field becomes clearer. We emphasize the importance of isomagnetic surfaces and polarization charges, and show analytically that whether a conducting fluid can freely traverse magnetic field lines or not depends solely on the magnetic gradient along the path of the fluid. If a fluid does not change its density distribution and shape (can be regarded as a quasi-rigid body) and moves along isomagnetic surface, it can freely traverse magnetic field lines without any magnetic drag, no matter how strong the magnetic field is. Besides theoretical analysis, we also present experimental results to support our analysis. The main purpose of this work is to correct a fallacy among some astrophysicists.

No MeSH data available.