建立了交变电磁场下气液两相流动的数学模型,考察了不同励磁电流参数下行波磁场对循环流最的影响.计算结果表明:电磁力的垂直分量与行波运动方向一致,水平分量呈中心对称.在励磁电流强度为200 A,频率为10 Hz的条件下,磁场分别单独作用于上升管或下降管时循环流量可提高10%以上,同时作用于上升管和下降管时循环流量可提高20%左右;当吹氩量小于1 750 L/min时,在上升管处施加磁场的效果优于下降管;当吹氩最大于1 750 L/min时,二者效果相同.当磁场作用于上升管时,在励磁电流频率为10 Hz的条件下,电流强度由100 A提高到600 A,循环流量可由83 t/min增大到129 t/min,并且近似成正比例关系;当磁场作用于上升管时,在励磁电流强度为200 A的条件下,电流频率由10 Hz增大到60 Hz,循环流量先增大后减小,在30 Hz达到极大值,为91.4 t/min.
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