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利用流体动力学的基本原理用计算机模拟了大尺寸齿轮在井式渗碳炉内进行气体渗碳时的流场分布。在炉内流场和温度场都达到稳定状况的定常流动工况下，分别比较了不同的齿轮直径及其摆放在炉内不同位置时的流速变化。计算结果说明，对于高度小于直径的渗碳炉采用单一顶置式风扇和合理的导流罩及导流桶设计，可以获得有利于炉温均匀性和渗碳均匀性的气流分布；计算机模拟还确定了工件、试样和氧探头的合理位置。生产使用的情况显示了流场动力学计算机模拟的优越性。
The basic principle of fluid dynamics was used to simulate the flow field distribution of large-size gears during gas carburization in a pit-type carburizing furnace. Under steady flow conditions where both the flow field and the temperature field in the furnace have reached a steady state, the different gear diameters and their flow velocities at different positions in the furnace were compared. The calculation results show that for a carburizing furnace with a height smaller than the diameter, a single overhead fan and a reasonable deflector and baffle design are used to obtain the airflow distribution that is favorable to uniformity of furnace temperature and carburization uniformity. The computer simulation also determines The workpiece, sample and oxygen probe a reasonable position. Production use shows the superiority of computer simulation of flow field dynamics.