关键词: 聚变堆；液态包层；磁流体流动；准二维湍流；不可压缩流动 

Abstract: In order to study the turbulent magnetohydrodynamic (MHD) effect of liquid metal in the tritium 
breeder blanket of fusion reactor, a new quasi two-dimensional one equation MHD turbulence model is developed 
in this paper, and the relevant numerical simulation program is made and verified. For the quasi two-dimensional 
MHD turbulent flow in a rectangular tube, the three-dimensional flow mainly occurs in the Hartmann layers, and 
the main flow area in the center presents two-dimensional flow. In order to reflect this special flow feature, the 
new turbulence model removes the traditional dissipation term from the standard k-ε model and instead uses the 
electromagnetic dissipation term to simulate the turbulent MHD effect. At the same time, Bradshaw hypothesis is 
used to model the turbulence eddy viscosity. In order to verify whether this turbulence model is reasonable, a 
numerical simulation program is made, and the program is corrected by using the results of direct numerical 
simulation (DNS). The results of numerical simulation are in good agreement with those of DNS. In general, the 
turbulence model can be applied to the numerical simulation of MHD turbulent flow in the liquid blanket of 
fusion reactor. 

Key words: Fusion reactor, Liquid blanket, Magnetohydrodynamic flow, Quasi-2D turbulence, Incompressible flow