AN INTEGRATED MODEL OF THE TOPAZ-II ELECTROMAGNETIC PUMP

A detailed model of the electromagnetic pump of the TOPAZ-II space nuc lear reactor power system is developed and compared with experimental data. The magnetic field strength in the pump depends not only on the current supplied by the pump thermionic fuel elements in the reactor c ore but also on the temperature of the coolant, the magnetic coil, and the pump structure. All electric and thermal properties of the coolan t, wall material of the pump ducts, and electric leads are taken to be temperature dependent. The model predictions are in good agreement wi th experimental data.