Numerical Simulation of Gas atomization in Close-C Eutectic Canada Inc.

Close-C Eutectic 气体雾化的数值模拟 Canada Inc.

• 批准号: 520588-2017
• 负责人: Dolatabadi, Ali
• 金额: $ 1.82万
• 依托单位: Concordia University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639536
• 关键词: Numerical; Simulation; Gas; atomization; Close

Gas atomization process is commonly used to produce metallic powders by rapid fragmentation of the flow ofmelt stream falling due to gravitational force. Fragmentation of melt stream starts with the formation ofligaments (primary atomization) followed by further breakup and the formation of spherical droplets (i.e.secondary breakup). The effectiveness of gas atomization process directly influences the powder sizedistribution produced in a powder manufacturing plant. Powders produced with this process are being used forcritical metallization applications and they must meet certain specifications. The ability to simulate the gasatomization particularly the zone of interaction between gas and melt stream is a valuable advancement for theoptimization of process parameters in order to meet the required specifications. In collaboration with EutecticCanada Inc., a leading powder manufacturer, we are aiming to calculate the optimized atomizing gas flow andmolten metal temperature in order to prevent the molten metal solidification during the atomization processand importantly predict the final particle size distribution. In this project, a Computational Fluid Dynamics(CFD) simulation of multiphase flow and heat transfer will be performed. We are expecting that the results ofthis study will allow Eutectic Canada Inc. to enhance its role in the fabrication of controllable and repeatablemetallic powders used in advanced additive manufacturing process as well as various coating processes such asHVOF and HVAF. Moreover, end users from aerospace, automotive, and energy sectors will benefit from theproject by enhancing their competitiveness and by contributing to the economy of Quebec and Canada.

气雾化过程通常用于通过快速碎片碎片，即由于重力降低而产生金属粉末。熔体流的碎片始于脂质的形成（原子原子化），然后进一步分解和球形液滴的形成（即次级分解）。气雾化过程的有效性直接影响粉末制造工厂中产生的粉末大小分布。使用此过程生产的粉末正在使用极临界金属化应用，它们必须符合某些规格。模拟气体化，特别是气体与熔体流之间相互作用区域的能力是过程参数进行临时的有价值的进步，以满足所需的规格。我们与领先的粉末制造商Eutecticcanada Inc.合作，我们的目标是计算优化的雾化气流和莫尔顿金属温度，以防止在雾化过程中熔融金属固化过程，并重要地预测最终的粒径分布。在此项目中，将对多相流和传热进行计算流体动力学（CFD）模拟。我们预计，这项研究的结果将使Eutectic Canada Inc.可以增强其在高级添加剂制造过程中使用的可控和重复性损失粉末以及各种涂层过程中使用的作用，例如Ashvof和HVAF。此外，航空航天，汽车和能源部门的最终用户将通过提高其竞争力并为魁北克和加拿大的经济做出贡献，从该项目中受益。