Articles techniques et présentations

Permanent Magnet Flowmeter (PMFM) is a non invasive device, which is used to measure the flow of electricallyconducting sodium in Fast Breeder Reactor Circuits. PMFM works on the principle of generation of motional EMF by magnetic forces exerted on the charges in a moving conductor. In this paper modeling of PMFM with different pipe sizes is done to predict the flowmeter output for a given sodium flowrate. Magnetic flux density distribution inside the flowmeter pipe is studied for a typical PMFM. Velocity profile inside the pipe is assumed to be parabolic and developed electric potential across the SS pipe (in which sodium is flowing at constant flow rate) is calculated. The predicted sensitivities from COMSOLanalysis are compared with experimental data