Abstract
A one-dimensional analytical model with the finite magnetic core length and conductive duct wall thickness of annular linear induction electromagnetic pump (ALIP) is established in this paper. Based on this model considering both the end effects and the conductive duct wall effect, the explicit analytical expressions of the electromagnetic and force fields are deduced. At the same time, the influence of end effects and the conductive duct wall effect on electromagnetic field and force field is analyzed and the components of magnetic field, induced eddy current and force field which are produced because of the existence of end effects are separated. Then, the explicit analytical expression of the developed pressure is obtained with the introduced fluid loss. Finally, to verify the feasibility and accuracy of the analytical model, the performance of a small three-phase ALIP under different frequency and current conditions are calculated analytically and the calculated results are verified by experiments data from the experimental test loop.
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