Abstract
Convective heat transfer characteristics of paramagnetic air induced by magnetic force in a non-gravitational field are scrutinized by two-dimensional numerical computations. In the present research, a shallow cylindrical enclosure filled by paramagnetic air is assumed to be placed inside the bore space of a superconducting magnet. Our numerical results find out that the strength of magnetothermal convection induced by magnetic force in quiescent air under thermal conduction state strongly depends on the relative positions of the enclosure and magnetic center, and the oscillatory magnetothermal convection with regular period and amplitude is generated when the enclosure is placed near the magnetic center. These phenomena can be successfully explained by considering the magnetic susceptibility of paramagnetic substance according to Curie's law. In addition, effect of the magnetic force in a gravitational field is also evaluated by examining magnetothermal convection induced by magnetic force in density stratified air.
