Modeling and Simulation of droplet collisions at modified ambient pressure, with high gradients in velocity or concentration and for non-miscible fluids (A07)

在修改的环境压力下、具有高速度或浓度梯度以及不可混溶流体的液滴碰撞的建模和仿真 (A07)

• 批准号: 251390570
• 金额: --
• 依托单位: Institut für Thermodynamik der Luft- und Raumfahrt (ITLR)
• 依托单位国家: 德国
• 项目类别: CRC/Transregios
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/251390570?language=en
• 关键词: Modeling; Simulation; droplet; collisions; modified

Binary collisions of droplets of different liquids are of great relevance for many processes in nature and in technical applications, where the liquids can either be molecularly miscible or not. In particular, such collisions form an important elementary process occurring in sprays, where the parameter-dependent collision outcomes “bouncing”, “coalescence” or “shattering” determine the spray evolution. Therefore, a deeper understanding of binary droplet collisions is strongly required as the foundation of a rigorous large-scale spray modeling. Direct Numerical Simulations with the multiphase-code FS3D will provide this understanding of the underlying physics needed for a sound modeling of binary droplet collisions.

不同液体的液滴的二元碰撞对于自然界和技术应用中的许多过程具有重要意义，其中液体可以是分子可混溶的或不是。特别是，这种碰撞形成了一个重要的基本过程中发生的喷雾，其中参数依赖的碰撞结果“反弹”，“聚结”或“粉碎”确定喷雾的演变。因此，更深入地了解二元液滴碰撞强烈需要作为一个严格的大规模喷雾建模的基础。直接数值模拟与多相代码FS3D将提供这种理解的基础物理所需的一个健全的模型的二进制液滴碰撞。