Secondary Regimes of Magnetohydrodynamic Flow in a Bent Channel
Abstract
The study of electrically conductive fluid flow in a magnetic field becomes relevant when plans for construction of research and industrial thermonuclear reactors are implemented. Such facilities contain a large number of complex shape pipes, in which liquid metals move in the presence of magnetic fields. Real life experiments are costly, so a large role in research and design is given to numerical modeling. The authors consider the flow of a viscous electrically conductive liquid within a 90 degree bent pipe. The liquid flows through the pipe under the action of a pressure gradient, the magnetic field is directed parallel to the inlet branch of the channel. The MHD solver based on the Nektar++ spectral/hp library is used for flow simulation. The spectral/hp method includes high accuracy of spectral methods and spatial flexibility of finite-element methods. At the present time, spectral-element methods are actively developed. In the paper, secondary stationary modes of magnetohydrodynamic flow are revealed to be different from the case without the magnetic field: a vortex or counterflow of liquid is formed in the inlet branch of a channel, while the flow separation in the outlet branch is suppressed by the magnetic field.
DOI 10.14258/izvasu(2018)1-07
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Copyright (c) 2018 А.В. Проскурин, А.М. Сагалаков
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