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The paper studies specific pumping characteristics of the annular linear pumps with travelling field(ALIP)for liquid sodium.This research represents a preliminary step in the study and development of very large electromagnetic pumps able to provide high flow rates.Since in such cases the magnetic Reynolds number are quite large,it is necessary to take into account the full magnetohydrodynamic interaction between the electromagnetic field and the liquid metal flow inside the pumping channel.The case where the velocity field is uniform in the channel cross section is firstly considered.Then,the coupling between the electromagnetic aspects with the hydrodynamic ones in a 2D axisyrnmetric fmite element model is studied,in order to compare the magnetic convection and the magnetic diffusion.
The paper studies specific pumping characteristics of the annular linear pumps with traveling field (ALIP) for liquid sodium. This research represents a preliminary step in the study and development of very large electromagnetic pumps able to provide high flow rates. Since in such cases the magnetic Reynolds number are quite large, it is necessary to take into account the full magnetohydrodynamic interaction between the electromagnetic field and the liquid metal flow inside the pumping channel. The case where the velocity field is uniform in the channel cross section is first considered.Then, the coupling between the electromagnetic aspects with the hydrodynamic ones in a 2D axisyrnmetric fmite element model is studied, in order to compare the magnetic convection and the magnetic diffusion.