Development of the Numerical Method for Liquid Metal Magnetohydrodynamics (II); Development of the 3D calculational method

Ohira, Hiroaki; Ara, Kuniaki 

Advanced electromagnetic components are investigated in Feasibility Studies on Commercialized FR Cycle System to apply to the main cooling systems of Liquid Metal Fast Reactor. Although a lot of experiments and numerical analysis were carried out on both high Reynolds numbers and high magnetic Reynolds numbers, the complex phenomena could not be evaluated in detail. As the second step of the development of the numerical methods for the liquid metal magnetohydrodynamics, we extended the two dimensional model to the three dimension and calculated the magnetohydrodynamics in the large electromagnetic pump for the verification. The velocity profile in the flow region showed M-shape and the calculated pressure drop in the pump agreed better than that by the 2-D model. From these results it was concluded that this 3-D model was available for evaluating the pump characteristics. Mgnetohydrodynamic turbulent channel flows were also calculated by using an artificial wall boundary conditions for the purpose of saving the computational time. These results showed that both average profiles of the streamwise velocity and the turbulent intensities were agreed well with those by a detail model and experimental data. From these results, it could be estimated that the artificial wall boundary conditions were valid even in uniform magnetic fields.