MHD flow feature, heat transfer, and structural mechanical behaviors in the U-shaped channel

doi:10.7523/j.issn.2095-6134.2019.05.005

Abstract

Abstract: In the fusion reactor blanket module, a U-shaped channel was investigated. Numerical simulations based on the finite volume method and finite element method were carried out to study magnetohydrodynamic features, heat transfer, and structure mechanical behaviors. The influences caused by flow velocity, magnetic field strength, and structural electrical conductivity were considered. Results suggest that stronger magnetic field and higher inlet velocity lead to higher outlet fluid temperature. With larger flow channel insert conductivity, ‘M-shaped’ velocity profiles were observed. Considering structural thermal stresses, the most dangerous area is near the side wall in the bend segment. Thermal deformation of the flow channel insert increases with the magnetic field magnitude, and thermal stresses decrease with the increase of inlet velocity. The electrical conductivity has little effect on structural stresses and strains. This work provides valuable information for the design of blanket modules.

Key words: U-shaped flow channel, blanket, MHD flow, heat transfer, thermal stress

CLC Number:

O361.3

LIANG Siyuan, NI Mingjiu, ZHANG Nianmei. MHD flow feature, heat transfer, and structural mechanical behaviors in the U-shaped channel[J]. , 2019, 36(5): 605-613.

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