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讲准字273号:From drop impact physics to spray cooling models

发布时间:2019-10-08|浏览次数:

讲座报告主题:From drop impact physics to spray cooling models
专家姓名:Cameron Tropea
日期:2019-11-02 时间:13:00
地点:能动学院1419报告厅
主办单位:能源与动力工程学院  

主讲概况:Cameron Tropea教授,1997年于多伦多大学获硕士学位,后于卡尔斯鲁厄理工学院获博士学位,1991至1997年间任教于埃尔朗根-纽伦堡大学,现担任达姆施塔特工业大学流体力学和空气动力学系主任。目前为Springer杂志“Experiments in Fluids”主编,并于2007至2014年间担任Center of Smart Interfaces(CSI)主任。研究专长:包括流体力学中的光学测量技术、界面传输现象、雾化喷雾过程以及非定常空气动力学等。

主讲内容:In this seminar the hydrodynamics and thermodynamics involved in drops impacting onto hot surfaces will be examined for a large range of drop Reynolds and Weber numbers as well as for a large range of surface temperatures, typical of industrial spray cooling situations as encountered in quenching or cooling of high performance electronics. Building on high-speed visualization of drop and spray impact onto hot surfaces and using local measurements of heat flux and drop impact parameters, analytical models are formulated for the main regimes of thermodynamic interaction nature convection, nucleate boiling, thermal atomization, film boiling. These models are then applied to predict spray cooling scenarios, in which hot surfaces are cooled from temperatures exceeding the Leidenfrost limit. These predictions are validated and refined using corresponding experiments in which all necessary measurement quantities are captured.


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