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The description of non-linear interactions of wave and non-wave modes in a non-adiabatic plasma flow
Abstract
The method of derivation of non-linear equations for interacting modes is explained and applied to a plasma's flow affected by a magnetic field. It is based on the linear projecting of the total perturbation field into specific variations of variables in individual modes of a flow. The method may be applied in many examples of fluid flows with different mechanisms of non-adiabaticity. It is of special importance in complex flows with large number of different modes. A flow of an ionized gas is one of the examples of such flows: it incorporates fast, slow magnetosonic modes, the Alfvén mode and the entropy mode. In the frames of this study, the wave vector may form an arbitrary angle urn:x-wiley:08631042:media:ctpp202100067:ctpp202100067-math-0001 with the straight equilibrium magnetic field. Thermal conduction, dynamic viscosity and a generic heating–cooling function, which is responsible for an energy inflow and radiative losses, are taken into account. Variable urn:x-wiley:08631042:media:ctpp202100067:ctpp202100067-math-0002 and plasma-β, diversity of the wave modes and a balance of different mechanisms of non-adiabaticity make the description of non-linear interaction of modes special. The non-linear excitation of the magnetosonic mode by the entropy mode is considered as an example.
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- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1002/ctpp.202100067
- License
- Copyright (2021 Wiley-VCH GmbH)
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
CONTRIBUTIONS TO PLASMA PHYSICS
no. 61,
pages 1 - 13,
ISSN: 0863-1042 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Perelomova A.: The description of non-linear interactions of wave and non-wave modes in a non-adiabatic plasma flow// CONTRIBUTIONS TO PLASMA PHYSICS -Vol. 61,iss. 9 (2021), s.1-13
- DOI:
- Digital Object Identifier (open in new tab) 10.1002/ctpp.202100067
- Verified by:
- Gdańsk University of Technology
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