I-Corps: Delivery of coherent coolant jet and nozzle manufacturing for grinding technology

I-Corps项目的更广泛的影响/商业潜力是开发一种方法，可以减轻油基冷却剂的扩散和油雾的形成，油雾通过吸入或火灾危险代表安全隐患。所提出的技术可以产生一种可调节的和不同的冷却方法，用于研磨工业。该技术可能会对经历内径磨削的行业感兴趣，在内径磨削中，材料从零件中取出以完成其内表面。喷嘴的制造、调理剂（减少冷却液内湍流的装置）的设计和射流扩散之间的联系对于包括成型和切割技术在内的其他材料加工技术非常重要。有效的冷却可以减少对环境的热污染，这在磨削行业是非常重要的。I-Corps项目的基础是开发冷却剂射流的多尺度、多相流体动力学计算模型，并可能生产用于长相干射流的喷嘴和调理剂等硬件。所提出的技术可以预测连贯射流的解体，并通过优化喷嘴和调理剂设置来提高冷却效率，以适应不同的磨削情况。如果在磨削过程中过热处理不当，可能会发生热损伤，包括拉伸残余应力、变色、软化、再硬化和裂纹。所提出的技术可以将喷嘴直接放置在磨削位置附近，并且通过所提出的技术对射流相干性的评估也可以帮助预测更换喷嘴的需求，可以使用3D打印及时制造。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

The broader impact/commercial potential of this I-Corps project is the potential development of a methodology that could mitigate the spread of oil-based coolant and the formation of oil mist that represents a safety hazard through inhalation or as a fire hazard. The proposed technology may produce an adjustable and varied methodology for cooling for use in the grinding industry. The technology may be of interest to industries that experience inner diameter grinding, where the material is removed from a part to finish its inner surface. The link between the manufacturing of the nozzle, design of conditioner (device for reduction of turbulence within coolant liquid), and jet spread is important for other material processing technologies including forming and cutting technologies. The efficient cooling could reduce heat pollution of the environment, which is substantial in the grinding industry.This I-Corps project is based on the development of a multi-scale and multi-phase fluid dynamics computational model of coolant jet and the potential production of hardware including a nozzle and conditioner for a long coherent jet. The proposed technology may be able to predict the disintegration of a coherent jet and improve the cooling efficiency by optimizing nozzle and conditioner settings for varying grinding situations. If overheating is not managed properly during grinding, thermal damage may occur including tensile residual stresses, discoloration, softening, re-hardening, and cracks. The proposed technology could place the nozzle in direct proximity to grinding situations, and the evaluation of jet coherence by the proposed technology could also assist in the prediction of the need for replacement of the nozzle, which can be timely manufactured using 3D printing.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.