U.S.-Korea Cooperative Research on Effects of Interfacial Structure on Film Condensation and Aerosol Transport in a Noncondensible Gas

本提案申请资金，允许威斯康星大学核工程系Michael L. Corradini博士与浦项工业大学机械工程系Moohwan Kim博士进行为期24个月的合作研究项目，研究界面结构对不凝性气体存在下膜状凝聚和气溶胶输送的影响。威斯康星大学的PI将进行两个主要的测试系列，(1)空气/蒸汽-水系列将用于表征界面波对冷凝传热系数的影响，(2)在混合气体中包含气溶胶的情况下重复这些测试，以研究不同空气-蒸汽比下蒸汽冷凝对气溶胶输送的影响。浦项工科大学的研究工作将直接针对分析实验数据，并将结果与韩国合作者开发的冷凝模型进行比较。除了该项目作为基础研究的重要性之外，这项研究对于理解被动冷凝如何帮助在严重核反应堆事故中从空气/蒸汽-水混合物中去除放射性气溶胶也很重要。该项目将为威斯康星大学正在进行的研究增加一个国际合作的维度，该研究由美国国家科学基金会（nsf）资助。MEA8351983, 5年总统青年研究员奖。该项目与美韩合作科学项目的目标相关，该项目旨在通过科学信息、思想、技能和技术的交流以及在互利问题上的合作，提高美韩科学家和工程师之间的合作水平。

This proposal requests funds to permit Dr. Michael L. Corradini, Department of Nuclear Engineering, University of Wisconsin to pursue with Dr. Moohwan Kim, Mechanical Engineering Department, Pohang Institute of Technology (POSTECH), for a period of 24 months, a program of cooperative research on the effect of interfacial structure on film condensation and aerosol transport in the presence of a noncondensable gas. Two major test series will be conducted by the PI at the University of Wisconsin, (1) an air/steam-water series will be used to characterize the effects of interfacial waves on the condensation heat transfer coefficient and (2) a repeat of these tests with aerosols included in the gas mixture to investigate the effect of steam condensation on aerosol transport under various air-steam ratios. The companion research effort at POSTECH will be directed toward analyzing the experimental data and comparing the results with a condensation model developed by the Korean collaborator. In addition to the importance of the project as a basic research study, this research is important to an understanding of how passive condensation can assist in the removal of radioactive aerosols from air/steam-water mixtures in severe nuclear reactor accidents. This project will add an international cooperative dimension to ongoing research at the University of Wisconsin supported by the National Science Foundation under Grant No. MEA8351983, a 5-year Presidential Young Investigator (PYI) award. This project is relevant to the objectives of the U.S.-Korea Cooperative Science Program which seeks to increase the level of cooperation between U.S. and Korean scientists and engineers through the exchange of scientific information, ideas, skills, and techniques and through collaboration on problems of mutual benefit.