CAREER: Bridging Length Scales to Unlock the Mechanistic Interdependence of Phase Interface Dynamics and Heat Transfer in Pool Boiling Processes

职业生涯：桥接长度尺度以解锁水池沸腾过程中相界面动力学和传热的机械相互依赖性

• 批准号: 1846165
• 负责人: Arden Moore
• 金额: $ 54.81万
• 依托单位: Louisiana Tech University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1846165&HistoricalAwards=false
• 关键词: CAREER; Bridging; Length; Scales; Unlock

The process of boiling a liquid from a submerged heating element in a stagnant pool, known as "pool boiling", plays a critical role in the successful operation of power plants, refrigeration systems, manufacturing, food production, and many other endeavors that are vital to the sustenance and quality of human life. A major scientific barrier to achieving greater efficiencies in pool boiling processes is the limited understanding of the heat transfer mechanisms at the small length and time scales associated with the generation of individual vapor bubbles. In this project, an innovative approach to pool boiling experimentation will provide temperature, heat flux, and liquid-vapor phase interface information from beneath individual vapor bubbles. This project will provide better understanding of the underlying physical processes which can be used to improve pool boiling processes at larger scales. In coordination with efforts in the laboratory, this project also supports strategic experiential learning and outreach initiatives for K-12 and undergraduate students related to the fundamentals of thermal energy, with special emphasis on measuring how these activities affect student understanding. Through these initiatives, educators will gain valuable insight into how students from different backgrounds best learn about the thermal sciences, thereby improving student success and increasing participation in science, technology, engineering, and math (STEM) disciplines within both traditional and underrepresented groups.The overall scientific objective of this project is to obtain a deep understanding of the timing and relative importance of the various modes of heat transfer associated with bubble nucleation, growth, and departure for both single and coalesced bubble conditions. This is achieved via a family of microfabricated test devices with thermal- and phase interface-sensing features centered on one or more artificially created nucleation sites, with sensor outputs temporally coupled to a high-speed imaging system. This provides a means of unlocking key insights into the complex interplay between liquid, vapor, and solid during pool boiling processes including long-debated questions regarding the behavior and roles of the moving contact line, microscale contact angles, and microlayer behavior in nucleate boiling heat transfer. The versatility of this method allows it to be employed to study a wide range of boiling phenomena, regimes, conditions, and multiscale surface modifiers, thereby making for a valuable new set of capabilities that can provide a high level of productivity and benefit to the greater scientific community. This award is jointly funded by the Division of Chemical, Bioengineering, Environmental, and Transport Systems in the Directorate of Engineering and the Established Program to Stimulate Competitive Research in the Office of Integrative Activities.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在静止的水池中从浸没的加热元件中使液体沸腾的过程（称为“池沸腾”）对于发电厂、制冷系统、制造业、食品生产和许多其他至关重要的工作的成功运行起着至关重要的作用关系到人类生活的维持和质量。在池沸腾过程中实现更高效率的一个主要科学障碍是对与单个蒸汽泡的产生相关的小长度和时间尺度的传热机制的了解有限。在该项目中，池沸腾实验的创新方法将提供来自单个蒸汽泡下方的温度、热通量和液-汽相界面信息。该项目将更好地理解潜在的物理过程，可用于改善更大规模的水池沸腾过程。与实验室的工作相协调，该项目还支持针对 K-12 和本科生的与热能基础知识相关的战略体验式学习和外展活动，特别强调衡量这些活动如何影响学生的理解。通过这些举措，教育工作者将获得宝贵的见解，了解来自不同背景的学生如何最好地学习热科学，从而提高学生的成功率，并增加传统群体和弱势群体对科学、技术、工程和数学 (STEM) 学科的参与。该项目的总体科学目标是深入了解与单个气泡和聚结气泡条件下气泡成核、生长和离开相关的各种传热模式的时间和相对重要性。这是通过一系列微制造测试设备来实现的，这些设备具有以一个或多个人工创建的成核位点为中心的热和相界面传感功能，传感器输出暂时耦合到高速成像系统。这提供了一种方法，可以揭示池沸腾过程中液体、蒸汽和固体之间复杂相互作用的关键见解，包括有关移动接触线的行为和作用、微观接触角和核沸腾热中微层行为的长期争论的问题转移。该方法的多功能性使其可用于研究各种沸腾现象、状态、条件和多尺度表面改性剂，从而形成一组有价值的新功能，可以提供高水平的生产力并造福于更多人。科学界。 该奖项由工程局化学、生物工程、环境和运输系统部门以及综合活动办公室促进竞争性研究的既定计划共同资助。该奖项反映了 NSF 的法定使命，并被认为值得通过使用基金会的智力优势和更广泛的影响审查标准进行评估来提供支持。

项目成果

Independent microscale sensing of phase interface and surface temperature during droplet evaporation

• DOI: 10.1016/j.applthermaleng.2023.121477
• 发表时间: 2023-09-09
• 期刊: APPLIED THERMAL ENGINEERING
• 影响因子: 6.4
• 作者: Mondal，Md Tanbin Hasan;Hossain，Rifat-E-Nur;Moore，Arden L.
• 通讯作者: Moore，Arden L.

Heat transfer and phase interface dynamics during impact and evaporation of subcooled impinging droplets on a heated surface

• DOI: 10.1016/j.applthermaleng.2024.123152
• 发表时间: 2024-04
• 期刊: Applied Thermal Engineering
• 影响因子: 6.4
• 作者: Md Tanbin Hasan Mondal;Md Shafayet Alam;Rifat Hossain;Arden L. Moore

Speed and location tracking of moving multiphase interfaces via a capacitance microsensor array during droplet evaporation

• DOI: 10.1016/j.mne.2022.100168
• 发表时间: 2022-11
• 期刊: Micro and Nano Engineering
• 作者: Md Tanbin Hasan Mondal;Rifat Hossain;R. Martin;A. Moore

Subcooled Pool Boiling on Hierarchical Micro- and Nanostructure-Modified Copper Surfaces in HFE-7100 Dielectric Liquid

• DOI: 10.1080/15567265.2023.2293710
• 发表时间: 2023-12
• 期刊: Nanoscale and Microscale Thermophysical Engineering
• 影响因子: 4.1
• 作者: Shayan Davani;Bin Zhang;Brendon Doran;Luke Hansen;Mohammad Khan;Mahdi Roodbari;W. J. Meng;Arden L. Moore

Spatially periodic vapor bubble activity during subcooled pool boiling on 1D aluminum alloy micro-fin arrays

• DOI: 10.1016/j.ijheatmasstransfer.2021.121760
• 发表时间: 2021-12
• 期刊: International Journal of Heat and Mass Transfer
• 影响因子: 5.2
• 作者: Brendon Doran;Bin Zhang;Shayan Davani;K. Osafo;Owen Sutka;A. Walker;N. Mueller;Stephen Akwaboa;P. Mensah;W. Meng;A. Moore