Simulation and experimental study on thermo-magnetic effect of nickel disk

• 1、School of Science, Changchun University of Science and Technology, Changchun 130012

Abstract：In this thesis, a simple thermo-magnetic engine is studied from aspects of theory, experiment and simulation. By thermo-magnetic phenomena,the thermo-magnetic engine converts thermal energy into kinetic energy. The thermal demagnetization effect of nickel disc that is made of low Curie point medium is studied theoretically. The thermo-magnetic force of the mechanical analysis and heat conduction model are established. The relationship between moment of nickel disk and parameters such as heating area, heat flux, heating position are obtained. The effect of magnetic induction of the magnet, the diameter and thickness of the nickel dick is studied experimentally. The optimum scheme for smooth rotation of nickel disk is obtained with a simulation using COMSOL Multiphysics. The results show that the bigger magnet of the magnetic induction, the smaller the distance between the nickel disk and the magnet, carried out simultaneously the heat treatment and heat dissipation treatment and so on can make Curie point engine run steadily.

Keywords： Thermo-magnetic engine Thermo-magnetic phenomenon Curie point Thermal demagnetization effect Heat conduction