Astrophysics and Space Science

, Volume 65, Issue 2, pp 453–458 | Cite as

On magnetoconvection in a rotating fluid layer of high thermal conductivity

  • D. J. Acheson


This paper explores the thermal instability of a plane fluid layer rotating rapidly about a vertical axis in the presence of a uniform vertical magnetic field. The thermal diffusivity κ is taken to be large compared with the magnetic diffusivity η. For a range of parameters it is shown that an increase of the magnetic field leads to adecrease in the critical Rayleigh number, and two quite distinct physical mechanisms appear to be involved.


Magnetic Field Thermal Conductivity Vertical Axis Thermal Diffusivity Rayleigh Number 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Acheson, D. J.: 1978, in P. H. Roberts and A. M. Soward (eds.),Rotating Fluids in Geophysics, pp. 315–49, Academic Press.Google Scholar
  2. Acheson, D. J. and Hide, R.: 1973,Rep. Prog. Phys. 36, 159.Google Scholar
  3. Chandrasekhar, S.: 1954,Proc. Roy. Soc. A225, 173.Google Scholar
  4. Chandrasekhar, S.: 1956,Proc. Roy. Soc. A237, 476.Google Scholar
  5. Cowling, T. G.: 1976,Magnetohydrodynamics, Hilger.Google Scholar
  6. Eltayeb, I. A.: 1972,Proc. Roy. Soc. A326, 229.Google Scholar
  7. Eltayeb, I. A.: 1975,J. Fluid Mech. 71, 161.Google Scholar

Copyright information

© D. Reidel Publishing Co 1979

Authors and Affiliations

  • D. J. Acheson
    • 1
  1. 1.Jesus CollegeOxfordEngland

Personalised recommendations