Heat Transfer and Fluid Flow in Micro and Mini Scale Devices

微型和微型设备中的传热和流体流动

• 批准号: RGPIN-2016-04172
• 负责人: Muzychka, Yuri
• 金额: $ 2.4万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=708237
• 关键词: Heat; Transfer; Fluid; Flow; Micro

This proposal is concerned with the development of robust models for predicting the thermal-fluid performance characteristics of complex internal flow systems. 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. Several focus areas have been chosen for this grant cycle. These include: single and two phase flow in micro- and mini-channels for use in compact and enhanced heat transfer devices and experimental and theoretical modelling of heat transfer and fluid flow in electronics packaging systems. These devices promote heat transfer through two ways, namely, increased heat transfer coefficients and increased surface area. The penalty for enhancing heat transfer in a compact heat exchanger is increased pressure drop or reduced mass flow rate for fixed pressure drop. The proposed research involves theoretical and experimental analysis of the thermal and hydrodynamic characteristics of complex internal flows and parallel development of optimized flow architectures. Optimum design of compact heat transfer devices is best achieved when accurate models are available for predicting the thermal-hydraulic performance of a particular device geometry. Finally, the engineer needs to optimize these designs considering many parameters, such as size (weight and volume) and cost, in addition to the required heat transfer and pumping power. The design of new devices using modern methods such as Entropy Generation Minimization or Constructal Theory is also actively pursued. These methods when applied to finite systems, allow for the optimal distribution of material and give the system freedom to morph under the fixed constraints of pressure drop, surface area, and volume. Applications of the proposed research include improving performance of energy systems, heat recovery, and thermal management of electronics and electronics systems. Significant progress in these areas has been made during the last cycle, leading to approximately 40 archival journal publications and the completion of 3 PhD and 2 Master's theses. It is expected that the new problems being considered in this proposal will be equally fruitful.

该提案涉及开发稳健的模型，用于预测复杂内部流动系统的热流体性能特征，这些结构存在于制冷、电子冷却、汽车冷却、太阳能加热等紧凑型传热装置中。新型紧凑型能源设备中也存在无数的其他工艺流程，例如燃料电池、微流体“芯片实验室”设备、微系统、MEMS 和其他下一代技术，因此需要进行基础研究。理论和实验相结合，以更好地确定性能特征并开发用于专用或通用仿真代码的预测模型。该提案旨在研究利用紧凑和微流架构的系统设计者目前面临的几个基本问​​题。其中包括：用于紧凑型和增强型传热装置的微通道和微型通道中的单相流和两相流，以及电子封装系统中传热和流体流动的实验和理论模型，这些装置通过两种方式促进传热。 ，增加传热系数并增加表面积。增强紧凑型热交换器中的传热的方法是增加压降或降低固定压降的质量流量。所提出的研究涉及复杂内部流动的热和流体动力学特性的理论和实验分析以及优化流动架构的并行开发。当有精确的模型可用于预测特定设备几何形状的热工水力性能时，紧凑型传热设备的设计才能最好地实现。最后，工程师需要考虑许多参数来优化这些设计，例如尺寸（重量和体积）和成本。 ，除了所需的传热和人们还积极寻求使用熵产生最小化或构造理论等现代方法来设计新设备，这些方法在应用于有限系统时，可以实现材料的最佳分布，并赋予系统在固定约束下自由变形的能力。所提出的研究的应用包括提高能源系统的性能、热回收以及电子和电子系统的热管理，这些领域在上一个周期中取得了重大进展，大约实现了40档案期刊出版物和完成 3 篇博士论文和 2 篇硕士论文预计本提案中考虑的新问题将同样富有成效。