Overseas Travel: National Technical University of Athens

分散湍流多相流的相变效应已应用于许多工业问题（过冷核沸腾、发动机中燃料液滴的蒸发和燃烧、医院环境中载菌液滴的分散）。这项海外旅行补助金的目的是通过与雅典技术大学热流体部门（由Bergeles教授领导）的直接互动和交流，发展PI的计算专业知识，该部门开发了许多特定的内部代码（DNS， LES， VOF），并将其应用于描述内燃机燃烧的计算模型。目的是为了PI修改数值代码，以便将它们应用于研究与相变过程相关的基本过程。通过PI提出的分析工作，将验证代码的结果并将其应用于相位变化重要的色散新研究中。访问将持续2个月，足以在计算方面取得进展，12个月后报告最终交付成果。

The effect of a phase change in dispersed turbulent multiphase flows has applications to many industrial problems (sub-cooled nucleate boiling, fuel droplet evaporation and combustion in engines, bacteria laden droplet dispersion in the hospital environment). The aim of this Overseas Travel Grant is to develop the computational expertise of the PI by direct interaction and exchange with the Thermofluids Section at Athens Technical University (headed by Prof Bergeles) who has developed a number of specific inhouse codes (DNS, LES, VOF) and has applied them computational models describing combustion in internal combustion engines. The aim is for the PI to modify numerical codes in order to apply them to study the fundamental processes associated with phase change processes. With the analytical work proposed by the PI, the results from the codes will be validated and applied to new research into dispersion when phase change is important. The visit will be for 2 months, sufficiently long to make head way on the computational side, with the final deliverable reported after 12 months.