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Asymptotic Model for Large-Scale Quasiheliostrophic Flow

Published online by Cambridge University Press:  19 July 2016

Mihai Ghizaru
Mihai Ghizaru*
Affiliation:
Astronomical Institute of Romanian Academy str. Cutitul de Argint 5, 75212, Bucharest, Romania

Abstract

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Starting from the ideal MHD equations written in spherical coordinates, using the regular perturbation method, quasiheliostrophic equations are derived as generalisation of quasigeostrophic models for atmospheric flow. From the fourth order momentum and induction equations, two prognostic equations for the stream function and magnetic flux function are derived. The magnetohydrodynamic model based on these equations is a suitable framework for describing the interaction between large-scale dynamic and magnetic features and the presence of specific patterns like active longitudes in the solar activity cycle.

Type
3. Numerical Simulations of Convection and Dynamo Processes
Information
Symposium - International Astronomical Union , Volume 157: The Cosmic Dynamo , 1993 , pp. 135 - 139
Copyright
Copyright © Kluwer 1993 

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