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Integral Process Modeling and Simulation of Spray Processes for Powder Production in the SPP "Process-Spray"

SPP“工艺喷雾”中粉末生产喷雾过程的整体过程建模和仿真

基本信息

批准号：
197531565
负责人：
Professor Dr.-Ing. Udo Fritsching
金额：
--
依托单位：
Abteilung Verfahrenstechnik
依托单位国家：
德国
项目类别：
Priority Programmes
财政年份：
2011
资助国家：
德国
起止时间：
2010-12-31 至 2014-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/197531565?language=en
关键词：
Integral Process Modeling Simulation Spray

项目摘要

Spray processes for the production of solid particles can be represented by a continuous simulation model. The nozzle, the primary break-up and the spray behavior influence the product quality. This influence in the spray process is mainly caused by solidification and form giving processes. These are the topic of projects in the SPP.The aim of this project is the development of models for solid particle producing spray processes based on the model of the SPP projects. Therefore, surface models simulate primary break-up of jets while secondary break-up is covered by multiphase models. To determine the interaction between droplets and particles a simulation is executed. Thus, regimes for coalescence and bouncing in case of two droplets and impact efficiency and adhering and penetration probability in case of particle-droplet are defined.In the second period these interaction models are integrated in a continuous simulation model. Afterwards, the models are combined to achieve a global model for the spray process. This model is to be validated against experimental data obtained in the SPP projects pilot plants.In a second model approach, the complete spray is simulated based on sheets, thus allowing an inverse engineering procedure from product properties to process conditions. In the end, the continuous model is used to produce data for the integral recursive process model. In addition, the results of the other SPP projects are taken into account. The aim is to construct a fully executable process model.

固体颗粒的喷射过程可以用连续模拟模型来表示。喷嘴、初次破碎和喷雾行为影响产品质量。这种影响在喷射过程中主要是由凝固和成形过程引起的。这些都是SPP项目的主题，本项目的目的是在SPP项目模型的基础上开发固体颗粒产生喷雾过程的模型。因此，表面模式模拟射流的初次破碎，而多相模式则涵盖了二次破碎。为了确定液滴和颗粒之间的相互作用，进行了模拟。由此，定义了两液滴的聚并和弹跳状态，以及颗粒液滴的冲击效率、粘附和穿透概率。在第二阶段，将这些相互作用模型集成到一个连续的仿真模型中。然后，将这些模型结合起来，得到喷涂过程的全局模型。该模型将根据SPP项目中试工厂获得的实验数据进行验证。在第二种模型方法中，基于薄片模拟完整的喷雾，从而允许从产品特性到工艺条件的逆向工程程序。最后，利用连续模型为积分递归过程模型生成数据。此外，还考虑到其他SPP项目的结果。目的是构建一个完全可执行的过程模型。