Existence for the stationary MHD-equations coupled to heat transfer with nonlocal radiation effects

Title:

Existence for the stationary MHD-equations coupled to heat transfer with nonlocal radiation effects

Creator:

Druet, Pierre-Étienne

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:35817681-2e38-41ed-8ef4-8e3bf1ad8b47
uuid:35817681-2e38-41ed-8ef4-8e3bf1ad8b47

Subject:

nonlinear elliptic system, magnetohydrodynamics, natural interface conditions, nonlinear heat equation, and nonlocal radiation boundary conditions

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

We consider the problem of influencing the motion of an electrically conducting fluid with an applied steady magnetic field. Since the flow is originating from buoyancy, heat transfer has to be included in the model. The stationary system of magnetohydrodynamics is considered, and an approximation of Boussinesq type is used to describe the buoyancy. The heat sources given by the dissipation of current and the viscous friction are not neglected in the fluid. The vessel containing the fluid is embedded in a larger domain, relevant for the global temperature- and magnetic field- distributions. Material inhomogeneities in this larger region lead to transmission relations for the electromagnetic fields and the heat flux on inner boundaries. In the presence of transparent materials, the radiative heat transfer is important and leads to a nonlocal and nonlinear jump relation for the heat flux. We prove the existence of weak solutions, under the assumption that the imposed velocity at the boundary of the fluid remains sufficiently small.

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Coverage:

791-825

Source:

Czechoslovak Mathematical Journal | 2009 Volume:59 | Number:3

Harvested from:

CDK

Metadata only:

false