Log in

Relevant bibliographies by topics / Simulation of magnetic fields / Journal articles

To see the other types of publications on this topic, follow the link: Simulation of magnetic fields.

Journal articles on the topic 'Simulation of magnetic fields'

Author: Grafiati

Published: 30 May 2022

Last updated: 19 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Simulation of magnetic fields.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Schnack, D. D., Z. Mikić, D. C. Barnes, and G. Van Hoven. "Magnetohydrodynamic simulation of coronal magnetic fields." Computer Physics Communications 59, no. 1 (1990): 21–37. http://dx.doi.org/10.1016/0010-4655(90)90153-r.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Trang, Nguyen Thi Thao, Peter Lott, and Quynh Lan Nguyen. "Magnetic Field in the Universe." Journal of Physics: Conference Series 3040, no. 1 (2025): 012009. https://doi.org/10.1088/1742-6596/3040/1/012009.

Full text

Abstract:

Abstract Magnetic fields permeate the universe and influence physical processes, from compact objects to large cosmic structures. Unlike electric fields, magnetic fields are closely tied to space-time dynamics, governing charged particle motion and producing radiation such as synchrotron and curvature emission. On intergalactic scales, magnetic fields are reshaped during galaxy mergers. Gravitational forces drive turbulence, shock waves, and gas inflows that amplify and reorganize magnetic fields. Radio synchrotron emission and polarization mapping observations reveal strong, coherent fields i

APA, Harvard, Vancouver, ISO, and other styles

3

Füzi, J. "Simulation of neutron motion in magnetic fields—magnetic monochromator." Measurement Science and Technology 19, no. 3 (2008): 034013. http://dx.doi.org/10.1088/0957-0233/19/3/034013.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Uetake, H., N. Hirota, Y. Ikezoe, K. Kitazawa, and K. Miyoshi. "Magnetic-field simulation for shielding from high magnetic fields." Journal of Applied Physics 91, no. 10 (2002): 6991. http://dx.doi.org/10.1063/1.1452672.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Vieira, Gregory B., Eliza Howard, Prannoy Lankapalli, Iesha Phillips, Keith Hoffmeister, and Jackson Holley. "Stray Magnetic Field Variations and Micromagnetic Simulations: Models for Ni0.8Fe0.2 Disks Used for Microparticle Trapping." Micromachines 15, no. 5 (2024): 567. http://dx.doi.org/10.3390/mi15050567.

Full text

Abstract:

Patterned micro-scale thin-film magnetic structures, in conjunction with weak (~few tens of Oe) applied magnetic fields, can create energy landscapes capable of trapping and transporting fluid-borne magnetic microparticles. These energy landscapes arise from magnetic field magnitude variations that arise in the vicinity of the magnetic structures. In this study, we examine means of calculating magnetic fields in the local vicinity of permalloy (Ni0.8Fe0.2) microdisks in weak (~tens of Oe) external magnetic fields. To do this, we employ micromagnetic simulations and the resulting calculations o

APA, Harvard, Vancouver, ISO, and other styles

6

Stacy, Athena, Christopher F. McKee, Aaron T. Lee, Richard I. Klein, and Pak Shing Li. "Magnetic fields in the formation of the first stars – II. Results." Monthly Notices of the Royal Astronomical Society 511, no. 4 (2022): 5042–69. http://dx.doi.org/10.1093/mnras/stac372.

Full text

Abstract:

ABSTRACT Beginning with cosmological initial conditions at z = 100, we simulate the effects of magnetic fields on the formation of Population III stars and compare our results with the predictions of Paper I. We use gadget-2 to follow the evolution of the system while the field is weak. We introduce a new method for treating kinematic fields by tracking the evolution of the deformation tensor. The growth rate in this stage of the simulation is lower than expected for diffuse astrophysical plasmas, which have a very low resistivity (high magnetic Prandtl number); we attribute this to the large

APA, Harvard, Vancouver, ISO, and other styles

7

Virtanen, I. O. I., A. A. Pevtsov, I. I. Virtanen, and K. Mursula. "Reconstructing solar magnetic fields from historical observations." Astronomy & Astrophysics 652 (August 2021): A79. http://dx.doi.org/10.1051/0004-6361/202140656.

Full text

Abstract:

Context. The evolution of the photospheric magnetic field can be simulated with surface flux transport (SFT) simulations, which allow for the study of the evolution of the entire field, including polar fields, solely using observations of the active regions. However, because only one side of the Sun is visible at a time, active regions that emerge and decay on the far-side are not observed and not included in the simulations. As a result, some flux is missed. Aims. We construct additional active regions and apply them to the far-side of the Sun in an SFT simulation to assess the possible effec

APA, Harvard, Vancouver, ISO, and other styles

8

Padoan, Paolo, Tuomas Lunttila, Mika Juvela, et al. "Magnetic Fields in Molecular Clouds." Proceedings of the International Astronomical Union 6, S271 (2010): 187–96. http://dx.doi.org/10.1017/s1743921311017601.

Full text

Abstract:

AbstractSupersonic magneto-hydrodynamic (MHD) turbulence in molecular clouds (MCs) plays an important role in the process of star formation. The effect of the turbulence on the cloud fragmentation process depends on the magnetic field strength. In this work we discuss the idea that the turbulence is super-Alfvénic, at least with respect to the cloud mean magnetic field. We argue that MCs are likely to be born super-Alfvénic. We then support this scenario based on a recent simulation of the large-scale warm interstellar medium turbulence. Using small-scale isothermal MHD turbulence simulation,

APA, Harvard, Vancouver, ISO, and other styles

9

Suzuki, Takeru K. "MHD in a Cylindrical Shearing Box. II. Intermittent Bursts and Substructures in MRI Turbulence." Astrophysical Journal 957, no. 2 (2023): 99. http://dx.doi.org/10.3847/1538-4357/acfb88.

Full text

Abstract:

Abstract By performing ideal magnetohydrodynamical (MHD) simulations with weak vertical magnetic fields in unstratified cylindrical shearing boxes with modified boundary treatment, we investigate MHD turbulence excited by magnetorotational instability. The cylindrical simulation exhibits extremely large temporal variation in the magnetic activity compared with the simulation in a normal Cartesian shearing box, although the time-averaged field strengths are comparable in the cylindrical and Cartesian setups. Detailed analysis of the terms describing magnetic energy evolution with “triangle diag

APA, Harvard, Vancouver, ISO, and other styles

10

Ye, Jun-Xian, Jia-Mian Hu, Zhan Shi, et al. "Magnetic-Field-Orientation Dependent Magnetoelectric Effect in FeBSiC/PZT/FeBSiC Composites." Advances in Materials Science and Engineering 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/249526.

Full text

Abstract:

We investigate the magnetic-field-orientation dependent magnetoelectric (ME) effect in the FeBSiC/Pb(Zr,Ti)O3(PZT)/FeBSiC laminates. It is shown that, by only using the bias-magnetic-field dependent ME response measured with the magnetic-field parallel to the surface plane of PZT slab, the magnetic-field-orientation dependent ME coefficient upon magnetic-fields of various amplitudes can be obtained via computer simulations. The simulation results match well the experimental measurements, demonstrating the applicability of the ME laminates-based sensors in detecting magnetic-fields with uncerta

APA, Harvard, Vancouver, ISO, and other styles

11

Inoue, Satoshi, Keiji Hayashi, and Takahiro Miyoshi. "An Evolution and Eruption of the Coronal Magnetic Field through a Data-driven MHD Simulation." Astrophysical Journal 946, no. 1 (2023): 46. http://dx.doi.org/10.3847/1538-4357/ac9eaa.

Full text

Abstract:

Abstract We present a newly developed data-driven magnetohydrodynamics (MHD) simulation code under a zero-β approximation based on a method proposed by Hayashi et al. 2018 and 2019. Although many data-driven MHD simulations have been developed and conducted, there are not many studies on how accurately those simulations can reproduce the phenomena observed in the solar corona. In this study, we investigated the performance of our data-driven simulation quantitatively using ground-truth data. The ground-truth data was produced by an MHD simulation in which the magnetic field is twisted by the s

APA, Harvard, Vancouver, ISO, and other styles

12

Rodman, Payton E., та Christopher S. Reynolds. "Evolution of the Magnetic Field in High- and Low-β Disks with Initially Toroidal Fields". Astrophysical Journal 960, № 2 (2024): 97. http://dx.doi.org/10.3847/1538-4357/ad0384.

Full text

Abstract:

Abstract We present the results from a pair of high-resolution, long-timescale (∼105 GM/c 3), global, three-dimensional magnetohydrodynamical accretion disk simulations with differing initial magnetic plasma β in order to study the effects of the initial toroidal field strength on the production of a large-scale poloidal field. We initialize our disks in approximate equilibrium with purely toroidal magnetic fields of strength β 0 = 5 and 200. We also perform a limited resolution study. We find that simulations of differing field strengths diverge early in their evolution and remain distinct ov

APA, Harvard, Vancouver, ISO, and other styles

13

Wu, Haohao, Dedong Gao, Shan Wang, Shengzhe Xu, Tengfei Ma, and Lirong Li. "Design and optimization of large-scale single-crystal furnaces asymmetric hooked magnetic fields." Journal of Physics: Conference Series 2351, no. 1 (2022): 012002. http://dx.doi.org/10.1088/1742-6596/2351/1/012002.

Full text

Abstract:

The solar photovoltaic power generation industry and large-scale integrated circuit industry put forward higher requirements for the size and quality of monocrystalline silicon. However, there are some problems in the production of large-diameter and high-quality monocrystalline silicon, such as uneven crucible thermal field and strong melt convection, which affect the quality of monocrystalline silicon. Therefore, by adopting the finite element 2D modeling method, this paper established the asymmetric hook magnetic field model of the 40-inch crucible. Hence the key magnetic field parameters a

APA, Harvard, Vancouver, ISO, and other styles

14

Amiri Roodan, Venoos, Jenifer Gómez-Pastora, Ioannis H. Karampelas, et al. "Formation and manipulation of ferrofluid droplets with magnetic fields in a microdevice: a numerical parametric study." Soft Matter 16, no. 41 (2020): 9506–18. http://dx.doi.org/10.1039/d0sm01426e.

Full text

Abstract:

Integrated computational fluid dynamics and magnetics simulation is employed to analyze the effects of magnetic force on the formation and manipulation of ferrofluid droplets within a flowing non-magnetic continuous phase in a microfluidic device.

APA, Harvard, Vancouver, ISO, and other styles

15

Shelyag, S., Y. E. Litvinenko, V. Fedun, G. Verth, J. J. González-Avilés, and F. S. Guzmán. "Flows and magnetic field structures in reconnection regions of simulations of the solar atmosphere: Do flux pile-up models work?" Astronomy & Astrophysics 620 (December 2018): A159. http://dx.doi.org/10.1051/0004-6361/201833752.

Full text

Abstract:

Aims. We study the process of magnetic field annihilation and reconnection in simulations of magnetised solar photosphere and chromosphere with magnetic fields of opposite polarities and constant numerical resistivity. Methods. Exact analytical solutions for reconnective annihilations were used to interpret the features of magnetic reconnection in simulations of flux cancellation in the solar atmosphere. We used MURaM high-resolution photospheric radiative magneto-convection simulations to demonstrate the presence of magnetic field reconnection consistent with the magnetic flux pile-up models.

APA, Harvard, Vancouver, ISO, and other styles

16

Venkatesh, Vavilala, K. Srinibas Rao, and Rama Rao J.V.G. "Calculation of electric field and magnetic field in a 245 kV GIS." E3S Web of Conferences 616 (2025): 03034. https://doi.org/10.1051/e3sconf/202561603034.

Full text

Abstract:

In India, the implementation of Gas Insulated Substation (GIS) has been accelerated for two decades. In the case of GIS, the electric and magnetic field estimation is very important because of the shorter distances of bus bars and line sections. Several others have given the estimation of electric and magnetic fields by solving nonlinear differential equations using numerical techniques. In this paper, the advanced simulation tools ELECNET and MAGNET have been used to estimate these fields. A typical 245k V GIS is considered for Modeling and simulation. The four important locations, XLPE cable

APA, Harvard, Vancouver, ISO, and other styles

17

Kim, Woong-Tae. "Effects of Magnetic Fields on Bar Substructures in Barred Galaxies." Proceedings of the International Astronomical Union 10, H16 (2012): 389. http://dx.doi.org/10.1017/s1743921314011582.

Full text

Abstract:

AbstractTo study the effects of magnetic fields on the properties of bar substructures, we run two-dimensional, ideal MHD simulations of barred galaxies under the influence of a non-axisymmetric bar potential. In the bar regions, magnetic fields reduce density compression in the dust-lane shocks, while removing angular momentum further from the gas at the shocks. This evidently results in a smaller and more distributed ring, and a larger mass inflows rate to the galaxy center in models with stronger magnetic fields. In the outer regions, an MHD dynamo due to the combined action of the bar pote

APA, Harvard, Vancouver, ISO, and other styles

18

NISHIKAWA, K. I., J. NIMIEC, M. MEDVEDEV, et al. "RADIATION FROM RELATIVISTIC SHOCKS WITH TURBULENT MAGNETIC FIELDS." International Journal of Modern Physics D 19, no. 06 (2010): 715–21. http://dx.doi.org/10.1142/s0218271810016865.

Full text

Abstract:

Using our new 3D relativistic electromagnetic particle (REMP) code parallelized with MPI, we investigated long-term particle acceleration associated with a relativistic electron–positron jet propagating in an unmagnetized ambient electron–positron plasma. We have also performed simulations with electron-ion jets. The simulations were performed using a much longer simulation system than our previous simulations in order to investigate the full nonlinear stage of the Weibel instability for electron–positron jets and its particle acceleration mechanism. Cold jet electrons are thermalized and ambi

APA, Harvard, Vancouver, ISO, and other styles

19

Peng, Xiao Ling, Xiao Yang, Hai Biao Wei, Rui Ping Yue, and Hong Liang Ge. "Theoretical Modeling and Simulations of Magnetic Fluids in Gradient Magnetic Fields." Advanced Materials Research 146-147 (October 2010): 1510–13. http://dx.doi.org/10.4028/www.scientific.net/amr.146-147.1510.

Full text

Abstract:

When a magnetic field is applied to magnetic fluids (MF), various structures of MF are formed: chain-like structures in low fields, columnar, lamellar and striped structures in high fields, ellipsoidal structures in pulsed fields, and layered structures in rotating fields. The inner structures and particle distributions of MF in gradient magnetic fields are quite interesting, but very few works have been done on this. In the present study, the effects of magnetic field gradient on the structures of MF are investigated using a two-dimensional Monte Carlo simulation. The results show that a grad

APA, Harvard, Vancouver, ISO, and other styles

20

Li, Shibang, Haoyu Lu, Jinbin Cao, et al. "Deflection of O₂ ⁺ Ion Flow by Magnetic Fields in the Martian Ionosphere." Astrophysical Journal 941, no. 2 (2022): 198. http://dx.doi.org/10.3847/1538-4357/aca32b.

Full text

Abstract:

Abstract The effect of the Martian crustal magnetic field on ion escape is the focus of considerable interest. Directions of magnetic fields near Mars determined by the interaction between Mars’ crustal and interplanetary magnetic fields have been suggested to play a significant role on ion transport around Mars. In this study we investigate the physical mechanism of deflection of O 2 + ion flow in two typical magnetic field orientations at the horizontal plane in the Martian ionosphere by performing 3D multifluid Hall magnetohydrodynamic simulations. Cross validation of the simulation results

APA, Harvard, Vancouver, ISO, and other styles

21

Brandenburg, A., R. L. Jennings, Å. Nordlund, M. Rieutord, R. F. Stein, and I. Tuominen. "Magnetic structures in a dynamo simulation." Journal of Fluid Mechanics 306 (January 10, 1996): 325–52. http://dx.doi.org/10.1017/s0022112096001322.

Full text

Abstract:

We use three-dimensional simulations to study compressible convection in a rotating frame with magnetic fields and overshoot into surrounding stable layers. The, initially weak, magnetic field is amplified and maintained by dynamo action and becomes organized into flux tubes that are wrapped around vortex tubes. We also observe vortex buoyancy which causes upward flows in the cores of extended downdraughts. An analysis of the angles between various vector fields shows that there is a tendency for the magnetic field to be parallel or antiparallel to the vorticity vector, especially when the mag

APA, Harvard, Vancouver, ISO, and other styles

22

Virtanen, I. O. I., I. I. Virtanen, A. A. Pevtsov, L. Bertello, A. Yeates, and K. Mursula. "Reconstructing solar magnetic fields from historical observations." Astronomy & Astrophysics 627 (June 25, 2019): A11. http://dx.doi.org/10.1051/0004-6361/201935606.

Full text

Abstract:

Aims. The evolution of the photospheric magnetic field has only been regularly observed since the 1970s. The absence of earlier observations severely limits our ability to understand the long-term evolution of solar magnetic fields, especially the polar fields that are important drivers of space weather. Here, we test the possibility to reconstruct the large-scale solar magnetic fields from Ca II K line observations and sunspot magnetic field observations, and to create synoptic maps of the photospheric magnetic field for times before modern-time magnetographic observations. Methods. We recons

APA, Harvard, Vancouver, ISO, and other styles

23

Dilmieva, E. T., A. P. Kamantsev, V. V. Koledov, et al. "Experimental simulation of a magnetic refrigeration cycle in high magnetic fields." Physics of the Solid State 58, no. 1 (2016): 81–85. http://dx.doi.org/10.1134/s1063783416010108.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Xu, Yi, Junhua Wang, Haoli Hou, and Jianwei Shao. "Simulation analysis of coupled magnetic-temperature fields in magnetic fluid hyperthermia." AIP Advances 9, no. 10 (2019): 105317. http://dx.doi.org/10.1063/1.5127919.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Siu-Tapia, A., A. Lagg, M. van Noort, M. Rempel, and S. K. Solanki. "Superstrong photospheric magnetic fields in sunspot penumbrae." Astronomy & Astrophysics 631 (October 29, 2019): A99. http://dx.doi.org/10.1051/0004-6361/201834083.

Full text

Abstract:

Context. Recently, there have been some reports of unusually strong photospheric magnetic fields (which can reach values of over 7 kG) inferred from Hinode SOT/SP sunspot observations within penumbral regions. These superstrong penumbral fields are even larger than the strongest umbral fields on record and appear to be associated with supersonic downflows. The finding of such fields has been controversial since they seem to show up only when spatially coupled inversions are performed. Aims. Here, we investigate and discuss the reliability of those findings by studying in detail observed spectr

APA, Harvard, Vancouver, ISO, and other styles

26

Yang, Bo, Jian-Fu Zhang, Alex Lazarian, and José Renan de Medeiros. "Statistical tracing of turbulent magnetic fields in the optically thick interstellar medium." Monthly Notices of the Royal Astronomical Society 503, no. 1 (2021): 768–76. http://dx.doi.org/10.1093/mnras/stab236.

Full text

Abstract:

ABSTRACT Based on high-resolution 3D data cubes from a magnetohydrodynamic (MHD) turbulence simulation, we study how to reveal the direction of the magnetic field within the optically thick interstellar medium by using the velocity gradient technique (VGT), correlation function anisotropy (CFA), and principal component analysis of anisotropies (PCAA). Considering the CO molecular tracers as a tracing method for radiative transfer processes, we find that the VGT and CFA can successfully trace the orientation of mean magnetic fields, which is in good agreement with the low-resolution numerical r

APA, Harvard, Vancouver, ISO, and other styles

27

Panesar, J., and A. H. Nelson. "3–D Models of Galaxy Magnetic Fields with Spiral Shocks." Symposium - International Astronomical Union 140 (1990): 133–34. http://dx.doi.org/10.1017/s0074180900189752.

Full text

Abstract:

We report here some preliminary results of 3–D numerical simulations of an α–ω dynamo in galaxies with differential rotation, small–scale turbulence, and a shock wave induced by a stellar density wave. We obtain the magnetic field from the standard dynamo equation, but include the spiral shock velocity field from a hydrodynamic simulation of the gas flow in a gravitational field with a spiral perturbation (Johns and Nelson, 1986).

APA, Harvard, Vancouver, ISO, and other styles

28

Fox, Peter A., Michael L. Theobald, and Sabatino Sofia. "Evolution of Large and Small Scale Magnetic Fields in the Sun." International Astronomical Union Colloquium 130 (1991): 218–22. http://dx.doi.org/10.1017/s0252921100079653.

Full text

Abstract:

AbstractThis paper will discuss issues relating to the detailed numerical simulation of solar magnetic fields, those on the small scale which are directly observable on the surface, and those on larger scales whose properties must be deduced indirectly from phenomena such as the sunspot cycle. Results of simulations using the ADISM technique will be presented to demonstrate the importance of the treatment of Alfvén waves, the boundary conditions, and the statistical evolution of small scale convection with magnetic fields. To study the large scale fields and their time dependence, the magnetic

APA, Harvard, Vancouver, ISO, and other styles

29

Liu, Qingjun, and Chun Xia. "Formation of Quiescent Prominence Magnetic Fields by Supergranulations." Astrophysical Journal Letters 934, no. 1 (2022): L9. http://dx.doi.org/10.3847/2041-8213/ac80c6.

Full text

Abstract:

Abstract To understand the formation of quiescent solar prominences, the origin of their magnetic field structures, i.e., magnetic flux ropes (MFRs), must be revealed. We use three-dimensional magnetofriction simulations in a spherical subdomain to investigate the role of typical supergranular motions in the long-term formation of a prominence magnetic field. Time-dependent horizontal supergranular motions with and without the effect of Coriolis force are simulated on the solar surface via Voronoi tessellation. The vortical motions by the Coriolis effect at boundaries of supergranules inject m

APA, Harvard, Vancouver, ISO, and other styles

30

Duţan, Ioana, Ken-Ichi Nishikawa, Yosuke Mizuno, et al. "Particle-in-cell Simulations of Global Relativistic Jets with Helical Magnetic Fields." Proceedings of the International Astronomical Union 12, S324 (2016): 199–202. http://dx.doi.org/10.1017/s1743921316012722.

Full text

Abstract:

AbstractWe study the interaction of relativistic jets with their environment, using 3-dimen- sional relativistic particle-in-cell simulations for two cases of jet composition: (i) electron-proton (e− − p+) and (ii) electron-positron (e±) plasmas containing helical magnetic fields. We have performed simulations of “global” jets containing helical magnetic fields in order to examine how helical magnetic fields affect kinetic instabilities such as the Weibel instability, the kinetic Kelvin-Helmholtz instability and the Mushroom instability. We have found that these kinetic instabilities are suppr

APA, Harvard, Vancouver, ISO, and other styles

31

Grošelj, Daniel, Lorenzo Sironi, and Anatoly Spitkovsky. "Long-term Evolution of Relativistic Unmagnetized Collisionless Shocks." Astrophysical Journal Letters 963, no. 2 (2024): L44. http://dx.doi.org/10.3847/2041-8213/ad2c8c.

Full text

Abstract:

Abstract We study a relativistic collisionless electron–positron shock propagating into an unmagnetized ambient medium using 2D particle-in-cell simulations of unprecedented duration and size. The shock generates intermittent magnetic structures of increasingly larger size as the simulation progresses. Toward the end of our simulation, at around 26,000 plasma times, the magnetic coherence scale approaches λ ∼ 100 plasma skin depths, both ahead and behind the shock front. We anticipate a continued growth of λ beyond the time span of our simulation, as long as the shock accelerates particles to

APA, Harvard, Vancouver, ISO, and other styles

32

Chiba, M. "Nonlinear Interaction Between Magnetic Fields and Spiral Arms." Symposium - International Astronomical Union 157 (1993): 373–74. http://dx.doi.org/10.1017/s0074180900174443.

Full text

Abstract:

The evolution of galactic magnetic fields under the influence of spiral arms is investigated numerically by 2-dimensional simulation. We compute several models, especially when the swing-excitation mechanism works. We consider also the modification of the mean velocity fields driven by the Lorentz force of the growing magnetic fields. The characteristic structure of magnetic fields around the arm in each model is compared with the observations.

APA, Harvard, Vancouver, ISO, and other styles

33

Pamyatnykh L. A., Lysov M. S., Pamyatnykh S. E., Agafonov L. Yu., Mekhonoshin D. S., and Shmatov G. A. "Mechanism of domain walls drift in pulsed magnetic fields in iron garnet crystals." Physics of the Solid State 64, no. 10 (2022): 1398. http://dx.doi.org/10.21883/pss.2022.10.54225.33hh.

Full text

Abstract:

Conditions for the drift of domain walls in pulsed magnetic fields of various organization (bipolar and unipolar pulsed magnetic fields, pulse packets) are established. Dependences of domain walls drift velocity on the parameters of pulsed magnetic fields (frequency, amplitude, pulse duration) are obtained. As a result of numerical simulation of domain walls drift in a uniaxial sample, an experimentally confirmed mechanism of domain walls drift in pulsed magnetic fields is proposed. Keywords: pulsed magnetic fields, iron garnets, domain walls, dynamic domain structures, drift of domain walls.

APA, Harvard, Vancouver, ISO, and other styles

34

Li, H., X. Peng, and W. Chen. "Simulation of the Chain-formation Process in Magnetic Fields." Journal of Intelligent Material Systems and Structures 16, no. 7-8 (2005): 653–58. http://dx.doi.org/10.1177/1045389x05052598.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Oreshkin, V. I., S. A. Chaikovsky, K. V. Khishchenko, and E. V. Oreshkin. "Numerical simulation of electrical explosions in megagauss magnetic fields." Journal of Physics: Conference Series 830 (May 4, 2017): 012029. http://dx.doi.org/10.1088/1742-6596/830/1/012029.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Bradshaw, L. A., A. Myers, J. P. Wikswo, and W. O. Richards. "A spatio-temporal dipole simulation of gastrointestinal magnetic fields." IEEE Transactions on Biomedical Engineering 50, no. 7 (2003): 836–47. http://dx.doi.org/10.1109/tbme.2003.813549.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Fidler, J., T. Schrefl, W. Scholz, D. Suess, and V. D. Tsiantos. "Micromagnetic simulation of magnetization reversal in rotational magnetic fields." Physica B: Condensed Matter 306, no. 1-4 (2001): 112–16. http://dx.doi.org/10.1016/s0921-4526(01)00988-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Martinez, D., C. Plechaty, and R. Presura. "Magnetic Fields for the Laboratory Simulation of Astrophysical Objects." Astrophysics and Space Science 307, no. 1-3 (2006): 109–14. http://dx.doi.org/10.1007/s10509-006-9275-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Fujimoto, K., K. Totsuka, Y. Uesaka, et al. "Computer simulation of MR response to transverse magnetic fields." IEEE Transactions on Magnetics 33, no. 3 (1997): 2386–91. http://dx.doi.org/10.1109/20.573862.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Machida, Mami, Takuya Akahori, Kenji Nakamura, Hiroyuki Nakanishi, and Marijke Haverkorn. "Faraday Depolarization Effects in Spiral Galaxies." Galaxies 7, no. 1 (2019): 15. http://dx.doi.org/10.3390/galaxies7010015.

Full text

Abstract:

Magnetic fields in the universe play an essential role in observations of the radio synchrotron continuum; however, we do not know enough about them, either observationally or theoretically. We are interested in galactic magnetic fields because they affect the structural formation of galaxies in terms of star-forming regions, spiral arms, and threads at the galactic center. To clarify the importance of magnetic fields, we carried out numerical simulations of the galactic gaseous disk with magnetic fields. We also calculated observables, such as the rotation measure and Stokes parameters, from

APA, Harvard, Vancouver, ISO, and other styles

41

Amard, Louis, Allan Sacha Brun, and Ana Palacios. "Understanding Post-main-sequence Stellar Magnetism: On the Origin of Pollux’s Weak Surface Magnetic Field." Astrophysical Journal 974, no. 2 (2024): 311. http://dx.doi.org/10.3847/1538-4357/ad6cd0.

Full text

Abstract:

Abstract The magnetic field of red giants is still poorly understood today. Close to the core, asteroseismology has revealed magnetic fields of several hundred thousand gauss, but close to the surface, spectropolarimetric observations of the red giant Pollux only showed an average field of the order of 1 G. Using the ASH code, we conduct a series of 3D nonlinear magnetohydrodynamical simulations aiming at modeling the dynamo process operating within the extended convective envelope of a star similar to the red giant Pollux. We find that the dynamo is efficient even for the slow rotation consid

APA, Harvard, Vancouver, ISO, and other styles

42

Varma, Vishnu, and Bernhard Müller. "3D simulations of oxygen shell burning with and without magnetic fields." Monthly Notices of the Royal Astronomical Society 504, no. 1 (2021): 636–47. http://dx.doi.org/10.1093/mnras/stab883.

Full text

Abstract:

ABSTRACT We present a first 3D magnetohydrodynamic (MHD) simulation of convective oxygen and neon shell burning in a non-rotating $18\, \mathrm{M}_\odot$ star shortly before core collapse to study the generation of magnetic fields in supernova progenitors. We also run a purely hydrodynamic control simulation to gauge the impact of the magnetic fields on the convective flow and on convective boundary mixing. After about 17 convective turnover times, the magnetic field is approaching saturation levels in the oxygen shell with an average field strength of $\mathord {\sim }10^{10}\, \mathrm{G}$, a

APA, Harvard, Vancouver, ISO, and other styles

43

Donnert, Julius, Hanbyul Jang, Peter Mendygral, Gianfranco Brunetti, Dongsu Ryu, and Thomas Jones. "Towards Exascale Simulations of the ICM Dynamo with WENO-Wombat." Galaxies 6, no. 4 (2018): 104. http://dx.doi.org/10.3390/galaxies6040104.

Full text

Abstract:

In galaxy clusters, modern radio interferometers observe non-thermal radio sources with unprecedented spatial and spectral resolution. For the first time, the new data allows to infer the structure of the intra-cluster magnetic fields on small scales via Faraday tomography. This leap forward demands new numerical models for the amplification of magnetic fields in cosmic structure formation—the cosmological magnetic dynamo. Here we present a novel numerical approach to astrophyiscal MHD simulations aimed to resolve this small-scale dynamo in future cosmological simulations. As a first step, we

APA, Harvard, Vancouver, ISO, and other styles

44

Palin, Denis. "FINITE ELEMENT MODELING OF MAGNETIC FIELDS OF FERROFLUIDIC SEALS." Transport engineering 2023, no. 3 (2023): 14–20. http://dx.doi.org/10.30987/2782-5957-2023-3-14-20.

Full text

Abstract:

The paper shows the process of constructing a model of a magnetic system of a ferrofluidic seal by means of femm 4.2. The results of a finite element simulation of a magnetic field are presented. It is found out that finite element modeling of the magnetic field gives the opportunity to assess qualitatively the efficiency of the magnetic system of ferrofluidic seals.

APA, Harvard, Vancouver, ISO, and other styles

45

Backs, Alex, Simon Sebold, Matteo Busi, Wai Tung Lee, Markus Strobl, and Dmytro Orlov. "Development and first results of a magnetic sample environment for polarized neutron imaging of thin metal sheets." EPJ Web of Conferences 286 (2023): 05003. http://dx.doi.org/10.1051/epjconf/202328605003.

Full text

Abstract:

Polarized neutron imaging brings the great advantage of analyzing bulk magnetic properties with good spatial resolution. The technique is based on the interaction of the neutron spin with magnetic samples or free magnetic fields and observing the changes to a spin-polarized neutron beam. The high sensitivity to even small magnetic fields is a benefit in obtaining magnetization information but simultaneously a challenge in instrumentation, since magnetic environments for the polarized neutron beam and for the sample, as well as the fringe field from the magnetic sample itself all affect the mea

APA, Harvard, Vancouver, ISO, and other styles

46

Yu, Chunkai, Zhongwei Yang, Xinliang Gao, Quanming Lu та Jian Zheng. "Electron Acceleration by Moderate-Mach-number Low-β Shocks: Particle-in-Cell Simulations". Astrophysical Journal 930, № 2 (2022): 155. http://dx.doi.org/10.3847/1538-4357/ac67df.

Full text

Abstract:

Abstract Particle acceleration is ubiquitous at shock waves, occurring on scales ranging from supernova remnants in the universe to coronal-mass-ejection-driven shocks and planetary bow shocks in the heliosphere. The most promising mechanism responsible for the almost universally observed power-law spectra is diffusive shock acceleration (DSA). However, how electrons are preaccelerated by different shocks to the energy required by the DSA theory is still unclear. In this paper, we perform two-dimensional particle-in-cell plasma simulations to investigate how the magnetic field orientations, wi

APA, Harvard, Vancouver, ISO, and other styles

47

Chávez, José Antonio Manco Chávez, Joel Núñez Mejía, Haydeé Verónica Túllume Huayanay, Daniel Enrique Terrones Rojas, Rolando Juan Borja Torres, and Carlos Héctor Cerna Gonzales. "Simulation of magnetic field produced by induction in toroid and solenoid using GeoGebra software." Journal of Posthumanism 5, no. 2 (2025): 85–104. https://doi.org/10.63332/joph.v5i2.406.

Full text

Abstract:

In today’s era of modernity and the appearance of new knowledge-construction approaches supported by technological tools such as A.I., various instruments contribute to enhancing educational quality like GeoGebra, an open-source software with extensive capabilities for simulations. This research established three objectives, all of which are answered in its conclusions. The study focused on simulating magnetic fields with predefined geometric shapes, analyzed using mathematical principles. Computational simulation was the primary methodology, involving the implementation of Ampere’s law, Biot-

APA, Harvard, Vancouver, ISO, and other styles

48

Zhong, Y. S., G. Qin, and S. S. Wu. "Modeling the Transport of Solar Energetic Particles in a Corotating Interaction Region." Astrophysical Journal 968, no. 2 (2024): 75. http://dx.doi.org/10.3847/1538-4357/ad3fb0.

Full text

Abstract:

Abstract We present a new three-dimensional (3D) magnetohydrodynamic (MHD) model and a new 3D energetic particle transport (EPT) model. The 3D MHD model numerically solves the ideal MHD equations using the relaxing total variation diminishing scheme. In the 3D MHD simulations, we use simple boundary conditions with a high-speed flow, and we can clearly identify a corotating interaction region (CIR) with the characteristics of forward shock and reverse shock. The 3D EPT model solves the Fokker–Planck transport equation for the solar energetic particles (SEPs) using backward stochastic processes

APA, Harvard, Vancouver, ISO, and other styles

49

Nishikawa, K. I., J. Niemiec, M. Medvedev, et al. "Simulation of relativistic shocks and associated radiation from turbulent magnetic fields." Proceedings of the International Astronomical Union 6, S275 (2010): 354–57. http://dx.doi.org/10.1017/s174392131001639x.

Full text

Abstract:

AbstractRecent PIC simulations of relativistic electron-positron (electron-ion) jets injected into a stationary medium show that particle acceleration occurs in the shocked regions. Simulations show that the Weibel instability is responsible for generating and amplifying highly nonuniform, small-scale magnetic fields and for particle acceleration. These magnetic fields contribute to the electron's transverse deflection behind the shock. The “jitter” radiation from deflected electrons in turbulent magnetic fields has different properties from synchrotron radiation calculated in a uniform magnet

APA, Harvard, Vancouver, ISO, and other styles

50

Liu, Jianjun, Zixing Xue, Zhenhai Dong, et al. "Multiphysics Modeling Simulation and Optimization of Aerodynamic Drum Magnetic Separator." Minerals 11, no. 7 (2021): 680. http://dx.doi.org/10.3390/min11070680.

Full text

Abstract:

Aerodynamic Drum Magnetic Separator (ADMS) uses an adjustable air flow to enhance the separation of magnetic particles from gangue. In order to explore the matching relationship between the magnetic field, the flow field, and the gravity field, as well as the capture and separation behavior of particles under the action of multi-physics, a related simulation model is established using the finite element software COMSOL Multiphysics and the accuracy of the simulation results is verified by measurement, formula calculation, and magnetic separation experiment. The trajectories and capture probabi

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!