Collaborative Research: ISS: Understanding thermal transport across a condensing film by conducting experiments in microgravity

合作研究：国际空间站：通过微重力实验了解冷凝膜上的热传输

• 批准号: 2322928
• 负责人: Chirag Kharangate
• 金额: $ 20万
• 依托单位: Case Western Reserve University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2322928&HistoricalAwards=false
• 关键词: Collaborative; Research; ISS; Understanding; thermal

The utilization of the condensation process can provide significant energy benefits to many industries including those in energy, aerospace, defense, consumer electronics, renewable energy, and water conservation. However, there is a lack of fundamental understanding of the different physical parameters impacting this condensation process limiting the widespread implementation of these systems. Gravity is one of those important parameters that strongly impact energy transport during the condensation process in various terrestrial systems of interest. However, there is no way of isolating gravity in laboratory settings. Understanding the physics behind gravity and its impact on condensing flow is the overarching goal of this project by performing testing utilizing the condensation facility onboard the International Space Station. A better understanding of physics will lead to better control of terrestrial systems and also impact engineering design decisions.Condensation increases system efficiency and reduces system footprint compared to air or liquid single-phase systems. However, the barrier to designing an efficient condensation heat rejection device stems from a lack of fundamental understanding of the influence of parameters like gravity on the liquid-vapor interfacial behavior and the corresponding thermal transport. The central hypothesis of this research is that if gravity is isolated, the impact of interfacial waviness and turbulence on thermal transport in the condensing film can be captured with an integrated experimental and computational approach. Experiments are planned to utilize the condensation module for heat transfer onboard the International Space Station’s Flow Boiling and Condensation Experiment facility and supplemental testing is planned in Earth gravity conditions. In addition, the research team plans to supplement the experiments with high-fidelity CFD simulations and modeling to capture the impact of the two-phase interfacial behavior on thermal transport. The broader impact objectives are to improve thermal transport modeling for processes with phase change, thus helping the two-phase flow and heat transfer community develop efficient condensers for a variety of industrial applications. In the education and outreach plan, the team will develop a module for Case Western Reserve University (CWRU)’s NSF-supported Introduction to Innovation program as well as set up a joint Two-Phase Flow Workshop between CWRU and Advanced Cooling Technologies.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.

冷凝过程的利用可以为许多行业提供重大的能源利益，包括能源，航空航天，国防，消费电子，可再生能源和节水。但是，缺乏对影响这种凝结过程的不同物理参数的基本理解，从而限制了这些系统的宽度实现。重力是在各种陆地感兴趣系统中凝结过程中强烈影响能量传输的重要参数之一。但是，在实验室环境中无法隔离重力。了解重力背后的物理及其对冷凝水流的影响是该项目的总体目标，该目标是利用国际空间站上的凝结设施进行测试。对物理学的更好理解将导致更好地控制陆地系统，并影响工程设计决策。与空气或液体单相系统相比，调节性提高了系统效率并降低了系统的占地面积。但是，设计有效的冷凝热排斥装置的障碍是由于缺乏对重力对液态蒸气界面行为和相应热传输的参数影响的基本了解。这项研究的中心假设是，如果重力是孤立的，则可以通过综合的实验和计算方法来捕获界面波和湍流对热传输的影响。计划实验利用冷凝模块在国际空间站的流动沸腾和冷凝实验设施上进行热传递，并计划在地球重力条件下进行补充测试。此外，研究小组计划使用高保真CFD模拟和建模来补充实验，以捕获两相界面行为对热运输的影响。更广泛的影响目标是改善随相变的过程的热运输建模，从而有助于两相流量和传热社区为各种工业应用开发有效的冷凝器。在教育和宣传计划中，团队将为Case Western Reserve University（CWRU）的NSF支持创新计划简介制定一个模块，并在CWRU和高级冷却技术之间建立了一个联合两相的流程研讨会。该奖项奖在NSF的法定任务中反映了通过评估的诚实的INFERCTIA，该奖项反映了诚实的支持者的知识范围。