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.

气体雾化工艺通常用于通过由于重力而下落的熔体流的快速破碎来生产金属粉末。熔体流的破碎从韧带的形成（初级雾化）开始，然后进一步破碎并形成球形液滴（即二次破碎）。气体雾化过程的有效性直接影响粉末制造厂生产的粉末尺寸分布。通过该工艺生产的粉末用于关键的金属化应用，并且它们必须满足某些规格。模拟气雾化的能力，特别是气体和熔体流之间相互作用的区域，对于优化工艺参数以满足所需的规格来说是一个有价值的进步。我们与领先的粉末制造商 EutecticCanada Inc. 合作，旨在计算优化的雾化气流和熔融金属温度，以防止熔融金属在雾化过程中凝固，并预测最终的粒度分布。在该项目中，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. 能够增强其在先进增材制造工艺以及 HVOF 和 HVAF 等各种涂层工艺中使用的可控和可重复金属粉末制造方面的作用。此外，航空航天、汽车和能源行业的最终用户将从该项目中受益，增强其竞争力并为魁北克和加拿大的经济做出贡献。