抄録
Recently, magnetic field gradients have been found to induce gas flow and promote combustion in diffusion flames. For example, when N2 gas stream was injected into air toward a weaker magnetic field, it was accelerated and behaved like a jet stream. This phenomenon was explained qualitatively by a magnetic attractive force acting on paramagnetic oxygen gas. In this study, such a magnetically induced jet stream of N2 gas was quantitatively analyzed. First, the magnetic body force acting on the gas flow and the governing equation of magnetic gas dynamics are presented. Using them, a numerical simulation was carried out for N2-Air convective flow under a magnetic field gradient. Calculated results show that the jet flow is accelerated to 80 cm/sec when the initial N2 gas velocity is 3.9 cm/sec and maximum magnetic induction is 1.5 T. Furthermore, calculation shows the existence of a convective air flow around the N2 jet flow. The results of the present study show good agreement with the experimental results.
