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首页> 外文会议>9th Annual Conference on Liquid Atomization and Spray Systems(ILASS-ASIA 2004) >Mathematical simulation of gas and droplet movement in spray forming equipment of baosteel
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Mathematical simulation of gas and droplet movement in spray forming equipment of baosteel

机译：宝钢喷射成形设备中气体和液滴运动的数学模拟

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The simulation software of compressible gas flow process in spray forming equipment was developed under three-dimensional cylindrical coordinates. Applying this program, we studied the metallurgical characteristic of 5kg atomization equipment made in baosteel. From the results we can found that when the gas flow strands sprayed from some definite angle into the atomizer chamber, they converged at focus point in axial line then expanded outside which showed jet current characteristic. The substrate stagnated the divergence jet strands of gas and then separated the flow strand into two big recycle zones in whole space. One of the recycle flow zone directed downwards, the other recycle flow zone which is the mainly reason caused the bonding of small liquid drop in the delivery hole reached the inlet area. In conjunction with the velocity model of single droplet, the movement state of liquid droplet after atomization by the gas from nozzle was simulated. It can be showed that the velocity of atomization gas is the key parameter influence the spray forming process and the velocity variation of liquid droplet related to the diameter of itself.
机译：在三维圆柱坐标系下开发了喷射成形设备中可压缩气体流动过程的仿真软件。应用该程序，研究了宝钢制造的5kg雾化设备的冶金特性。从结果中我们可以发现，当气流束以一定角度喷射到雾化室中时，它们会聚在轴线上的焦点处，然后向外扩展，从而显示出射流特性。基材使发散的气体束停滞，然后将流动束分成整个空间中的两个大循环区。其中一个循环流动区朝下，另一个循环流动区，这是导致输送孔中的小液滴粘结到入口区域的主要原因。结合单个液滴的速度模型，模拟了液滴被喷嘴气体雾化后的运动状态。可以看出，雾化气体的速度是影响喷雾成形过程的关键参数，液滴的速度变化与其自身直径有关。

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