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Добірка наукової літератури з теми "Rotating field"

Автор: Grafiati

Опубліковано: 16 вересня 2023

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Статті в журналах з теми "Rotating field"

1

Shibahashi, H., and M. Takata. "Pulsation of Rotating Magnetic Stars." International Astronomical Union Colloquium 139 (1993): 134. http://dx.doi.org/10.1017/s0252921100117117.

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Recently, one of the rapidly oscillating Ap stars, HR 3831, has been found to have an equally split frequency septuplet, though its oscillation seems to be essentially an axisymmetric dipole mode with respect to the magnetic axis which is oblique to the rotation axis (Kurtz et al. 1992; Kurtz 1992). In order to explain this fine structure, we investigate oscillations of obliquely rotating magnetic stars by taking account of the perturbations due to the magnetic fields and the rotation. We suppose that the star is rigidly rotating and that the magnetic field is a dipole field and its axis is ob

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2

Miguel, M. C., and J. M. Rubı́. "Rotating Magnetic Field-Induced Rotations of Magnetic Holes." Journal of Colloid and Interface Science 172, no. 1 (1995): 214–21. http://dx.doi.org/10.1006/jcis.1995.1245.

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3

Reiners, Ansgar. "Magnetic Fields in Low-Mass Stars: An Overview of Observational Biases." Proceedings of the International Astronomical Union 9, S302 (2013): 156–63. http://dx.doi.org/10.1017/s1743921314001963.

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AbstractStellar magnetic dynamos are driven by rotation, rapidly rotating stars produce stronger magnetic fields than slowly rotating stars do. The Zeeman effect is the most important indicator of magnetic fields, but Zeeman broadening must be disentangled from other broadening mechanisms, mainly rotation. The relations between rotation and magnetic field generation, between Doppler and Zeeman line broadening, and between rotation, stellar radius, and angular momentum evolution introduce several observational biases that affect our picture of stellar magnetism. In this overview, a few of these

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4

Co, Raymond T., Keisuke Harigaya, and Aaron Pierce. "Cosmic perturbations from a rotating field." Journal of Cosmology and Astroparticle Physics 2022, no. 10 (2022): 037. http://dx.doi.org/10.1088/1475-7516/2022/10/037.

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Abstract Complex scalar fields charged under approximate U(1) symmetries appear in well-motivated extensions of the Standard Model. One example is the field that contains the QCD axion field associated with the Peccei-Quinn symmetry; others include flat directions in supersymmetric theories with baryon, lepton, or flavor charges. These fields may take on large values and rotate in field space in the early universe. The relevant approximate U(1) symmetry ensures that the angular direction of the complex field is light during inflation and that the rotation is thermodynamically stable and is lon

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5

Guo, Hao, Hyeon-Jung Kim, and Sang-Young Kim. "Research on Hydrogen Production by Water Electrolysis Using a Rotating Magnetic Field." Energies 16, no. 1 (2022): 86. http://dx.doi.org/10.3390/en16010086.

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In this paper, the effect of rotating magnetic fields on hydrogen generation from water electrolysis is analyzed, aiming to provide a research reference for hydrogen production and improving hydrogen production efficiency. The electrolytic environment is formed by alkaline solutions and special electrolytic cells. The two electrolytic cells are connected to each other in the form of several pipes. The ring magnets are used to surround the pipes and rotate the magnets so that the pipes move relative to the magnets within the ring magnetic field area. Experimentally, the electrolysis reaction of

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6

Matos, Tonatiuh, and Darío Núñez. "Rotating scalar field wormhole." Classical and Quantum Gravity 23, no. 13 (2006): 4485–95. http://dx.doi.org/10.1088/0264-9381/23/13/012.

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7

Диканский, Ю. И., М. А. Беджанян, А. А. Колесникова, А. Ю. Гора та А. В. Чернышев. "Динамические эффекты в магнитной жидкости с микрокаплями концентрированной фазы во вращающемся магнитном поле". Журнал технической физики 89, № 3 (2019): 373. http://dx.doi.org/10.21883/jtf.2019.03.47171.242-18.

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AbstractVariation in the shape of microdrops of a highly concentrated magnetic colloid resulting from phase separation in a magnetic fluid has been studied. It has been found that even weak magnetic fields (such as those comparable to the geomagnetic field) substantially influence the geometry and behavior of microdrops. Different configurations of microdrops in a rotating magnetic field have been considered. The occurrence of a rotation moment that acts on a macrodrop of a magnetic fluid in a rotating magnetic field has been shown. The rotation moment is due to the rotation of concentrated ph

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8

Vargas-Rodríguez, H., A. Gallegos, M. A. Muñiz-Torres, H. C. Rosu, and P. J. Domínguez. "Relativistic Rotating Electromagnetic Fields." Advances in High Energy Physics 2020 (December 29, 2020): 1–17. http://dx.doi.org/10.1155/2020/9084046.

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In this work, we consider axially symmetric stationary electromagnetic fields in the framework of special relativity. These fields have an angular momentum density in the reference frame at rest with respect to the axis of symmetry; their Poynting vector form closed integral lines around the symmetry axis. In order to describe the state of motion of the electromagnetic field, two sets of observers are introduced: the inertial set, whose members are at rest with the symmetry axis; and the noninertial set, whose members are rotating around the symmetry axis. The rotating observers measure no Poy

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9

Watterson, Peter A. "Analytical solutions for the current driven by a rotating magnetic field in a spherical plasma." Journal of Plasma Physics 46, no. 2 (1991): 271–98. http://dx.doi.org/10.1017/s0022377800016111.

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The steady currents driven in a spherical plasma by a rotating magnetic field via the Hall effect are studied analytically. The total field is shown to be symmetric across the origin. Integral relationships are obtained between Ohmic dissipation, angular momentum and the oscillating axial current density. The topology of the sum of a Hill's vortex field and a rotating field is documented. Analytical solutions for the driven current are obtained by expansion for the limits corresponding to small rotation frequency, to small number density, to large rotating-field magnitude, to small resistivity

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10

Ayadi, Badreddine, Fatih Selimefendigil, Faisal Alresheedi, Lioua Kolsi, Walid Aich, and Lotfi Ben Said. "Jet Impingement Cooling of a Rotating Hot Circular Cylinder with Hybrid Nanofluid under Multiple Magnetic Field Effects." Mathematics 9, no. 21 (2021): 2697. http://dx.doi.org/10.3390/math9212697.

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The cooling performance of jet impinging hybrid nanofluid on a rotating hot circular cylinder was numerically assessed under the effects of multiple magnetic fields via finite element method. The numerical study was conducted for different values of Reynolds number (100≤Re≤300), rotational Reynolds number (0≤Rew≤800), lower and upper domain magnetic field strength (0≤Ha≤20), size of the rotating cylinder (2 w ≤r≤ 6 w) and distance between the jets (6 w ≤ H ≤ 16 w). In the presence of rotation at the highest speed, the Nu value was increased by about 5% when Re was increased from Re = 100 to Re

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