Heat transfer and fluid flow in compact energy systems and microelectronics cooling devices

这项建议涉及复杂内部流动系统的热-流体性能特征的建模和下一代应用的新技术的开发。简单和复杂的流动结构在用于制冷、电子冷却、汽车冷却、太阳能供暖和无数其他工艺流程的紧凑型换热设备中都可以找到。在新的紧凑型能源设备中也发现了复杂的流动，如燃料电池、微流控“芯片实验室”设备、微系统、MEMS和其他下一代技术。需要进行基础性研究，包括理论研究和实验研究，以更好地确定性能特性，并开发用于专用或通用模拟代码的预测模型。该提案旨在研究目前使用紧凑和微流体系结构的系统设计者所面临的几个基本问题。本赠款周期选择了三个关键的重点领域。其中包括：微通道和微型通道中的单相和两相流动，紧凑型和强化换热设备的优化设计，以及多相和非牛顿流动的实验和理论建模。作为这项工作的一部分，我们还预计将开发新的冷却概念，并正在建造工作原型以证明其可行性。这些改进的概念将比以前的概念更小、更高效。

This proposal is concerned with modeling of the thermal-fluid performance characteristics of complex internal flow systems and development of new technologies for next generation applications. Simple and complex flow architecture is found in compact heat transfer devices for refrigeration, electronics cooling, automotive cooling, solar heating, and in countless other process flows. Complex flows are also found in new compact energy devices such as fuel cells, micro fluidic "lab on chip" devices, micro-systems, MEMS, and other next generation technologies. There is a need for fundamental study, both theoretical and experimental, to better ascertain the performance characteristics and to develop predictive models for use in specialized or generic simulation codes. This proposal aims to study several fundamental problems now facing designers of systems utilizing compact and micro-flow architecture. Three key focus areas have been chosen for this grant cycle. These include: single and two phase flow in micro- and mini-channels, optimal design of compact and enhanced heat transfer devices, and experimental and theoretical modelling of multiphase and non-Newtonian flows. As part of this work, we also expect that new cooling concepts will be developed with working prototypes being constructed to demonstrate feasibility.These improved concepts will be smaller and more efficient than their predecessors.