The main reason that the submerged nozzle clogged during continuous casting of high aluminum low carbon steel is aluminate that aggraded the submerged nozzle wall.

中薄板坯连铸机生产低碳高铝钢过程中，浸入式水口堵塞的主要原因是水口与钢水之间产生化学作用和钢水中的氧化铝夹杂物在水口壁上沉积。

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Under the same wall heat condition, with the increase of momentum correction coefficient, viscosity loss of the nozzle increases, but thrust and specific impulse decrease.

在同等壁面热条件下，随着动量调节系数的增加，喷管粘性损失增大，喷管的推力和比冲都将下降；

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At different time, particles with different sizes can hit different locations on the wall, which are mainly at the connective part of shell and nozzle and out the convergent section of nozzle.

在不同的时间下，不同尺寸的颗粒会撞击壁面不同的位置，但主要集中在壳体与喷管的相接部分和喷管的收敛段。

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