Zobrazeno 1 - 10
of 144
pro vyhledávání: '"Michael R. E. Proctor"'
Publikováno v:
Journal of Fluid Mechanics. 927
Double-diffusive convection, in which a fluid is acted upon by two fields (such as temperature and salinity) that affect the density, has been widely studied in areas as diverse as the oceans and stellar atmospheres. Assuming classical Fickian diffus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::455269fecaca9dc36657a98dbaa2eec3
https://doi.org/10.1017/jfm.2021.721
https://doi.org/10.1017/jfm.2021.721
Publikováno v:
Proc Math Phys Eng Sci
We study the instability of a B��nard layer subject to a vertical uniform magnetic field, in which the fluid obeys the Maxwell-Cattaneo (MC) heat flux-temperature relation. We extend the work of Bissell (Proc. R. Soc. A, 472: 20160649, 2016) to n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0ee22388cc831f784e3ced69f1c4152
https://europepmc.org/articles/PMC7544336/
https://europepmc.org/articles/PMC7544336/
Autor:
Michael R. E. Proctor, Robert J. Teed
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 458:2885-2889
The Sun's magnetic field exhibits coherence in space and time on much larger scales than the turbulent convection that ultimately powers the dynamo. In the past the α-effect (mean-field) concept has been used to model the solar cycle, but recent wor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::449c91aed6f9b28ec68213c17727283a
https://doi.org/10.1093/mnras/stw490
https://doi.org/10.1093/mnras/stw490
Publikováno v:
Astronomy & Geophysics. 61:5.11-5.11
Douglas Gough, Michael Proctor and Steven Tobias remember the South African-born astrophysicist and mathematician, a former president of the RAS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f28c6e6b9f526e2eefe03b3a32a7f16
https://doi.org/10.1093/astrogeo/ataa067
https://doi.org/10.1093/astrogeo/ataa067
Publikováno v:
Arnold Mathematical Journal. 1:113-126
We employ the method of multiple scales (two-timing) to analyse the vortex dynamics of inviscid, incompressible flows that oscillate in time. Consideration of distinguished limits for Euler’s equation of hydrodynamics shows the existence of two mai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dca45d3d4c6897e636577c7419c11691
https://doi.org/10.1007/s40598-015-0010-x
https://doi.org/10.1007/s40598-015-0010-x
The Sun’s magnetic field exhibits coherence in space and time on much larger scales than\ud the turbulent convection that ultimately powers the dynamo. In this work, we look for numerical\ud evidence of a large-scale magnetic field as the magnetic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f0e305bb13efb8a8ba5c43ad7eb7d61
https://eprints.gla.ac.uk/148330/1/148330.pdf
https://eprints.gla.ac.uk/148330/1/148330.pdf
Autor:
Michael R. E. Proctor, Steven Cowley, Alexander Schekochihin, Tarek A. Yousef, Alexey B. Iskakov, James C. McWilliams
This paper is a detailed report on a programme of simulations used to settle a long-standing issue in the dynamo theory and demonstrate that the fluctuation dynamo exists in the limit of large magnetic Reynolds number Rm>>1 and small magnetic Prandtl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6fd2e7a4491944d0571f891612e136e
https://doi.org/10.1088/1367-2630/9/8/300
https://doi.org/10.1088/1367-2630/9/8/300
Autor:
Alexey B. Iskakov, Michael R. E. Proctor, James C. McWilliams, Steven Cowley, Alexander Schekochihin
Direct numerical simulations of incompressible nonhelical randomly forced MHD turbulence are used to demonstrate for the first time that the fluctuation dynamo exists in the limit of large magnetic Reynolds number Rm>>1 and small magnetic Prandtl num
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e8512ff4931755d548399e3228fe8a5
https://doi.org/10.1103/physrevlett.98.208501
https://doi.org/10.1103/physrevlett.98.208501
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 426:3349-3359
We consider the three-dimensional instability of a layer of horizontal magnetic field in a polytropic atmosphere where, contrary to previous studies, the field lines in the initial state are not unidirectional. We show that if the twist is initially
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1ed8b2ba88c618fd8551e6a16ff99b6
https://doi.org/10.1111/j.1365-2966.2012.21920.x
https://doi.org/10.1111/j.1365-2966.2012.21920.x
Publikováno v:
Geophysical and Astrophysical Fluid Dynamics
Geophysical and Astrophysical Fluid Dynamics, Taylor & Francis, 2012, 106 (4-5), pp.508-523. ⟨10.1080/03091929.2011.638067⟩
Geophysical and Astrophysical Fluid Dynamics, Taylor & Francis, 2012, 106 (4-5), pp.508-523. ⟨10.1080/03091929.2011.638067⟩
International audience; Observations of the quiet solar surface indicate that localised concentrations of vertical magnetic flux tend to accumulate in the convective downflows. Furthermore, there is some evidence to suggest that mesogranular boundari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ffffb441018d9d2fb921e7458de5aa48
https://doi.org/10.1080/03091929.2011.638067
https://doi.org/10.1080/03091929.2011.638067