Collaborative Research: Fundamental Studies of Vapor-Liquid Interfaces with Phase Change in Microdevices

ABSTRACTPROPOSAL没有。项目编号：CTS-0245396， cts -0244676提案类型：研究者发起（合作）主要研究者：GEORGE M. HOMSY, VLADIMIR S. ajav机构：加州大学圣巴巴拉分校，南卫理大学合作研究：微器件中相变气液界面的基础研究该提案解决了约束几何条件下气液界面蒸发和冷凝过程中流体力学和热传输的基本问题。提出了一系列现象的理论/计算和实验研究，这将允许深入了解许多不同应用（如微热管，微机电系统（MEMS）和光学开关）共同的潜在机制。这是UCSB的工程科学家和新大的应用数学家之间的合作。两组密切相关的问题被处理。第一项研究涉及复杂几何结构中的三维稳定界面构型，其中蒸发由较冷区域的冷凝平衡。这里的挑战包括解决流体流动和传热耦合在一起的非线性自由边界问题。同时测量热流密度、温度分布和汽泡结构的实验。要解决的第二组问题涉及受约束界面的非定常运动。拟议的研究具有广泛的技术影响。这包括改进用于有效冷却电子元件的热管设计，以及为开发一种新型光开关设备奠定基础，这种设备可以大大提高通信网络的速度。该项目将通过研究和跨学科科学合作促进学习。通过与pi和不同背景和观点的学生互动，研究生将获得宝贵的研究经验，并扩展他们的知识超出他们的研究领域。作为UCSB为未来的工程和科学专业学生组织的项目的一部分，在夏季向高中生提供外展服务。为了进一步增加项目的教育价值，结果将被纳入教育模块，作为多媒体流体力学第2卷的一部分，教育软件。该项目由化学和传输系统部门的流体动力学和水力学、界面传输和热力学、热传输和热处理项目资助。

ABSTRACTPROPOSAL NO.: CTS-0245396, CTS-0244676PROPOSAL TYPE: INVESTIGATOR INITIATED (COLLABORATIVE)PRINCIPAL INVESTIGATORS: GEORGE M. HOMSY, VLADIMIR S. AJAEVINSTITUTION: U.C. SANTA BARBARA, SOUTHERN METHODIST UNIVERSITYCOLLABORATIVE RESEARCH: FUNDAMENTAL STUDIES OF VAPOR-LIQUID INTERFACES WITH PHASE CHANGE IN MICRODEVICESThe proposal addresses fundamental issues of fluid mechanics and heat transport in evaporation and condensation at vapor-liquid interfaces in constrained geometries. Combined theoretical/computational and experimental studies of a range of phenomena are proposed which will allow insight into the underlying mechanisms common to many different applications such as micro heat pipes, microelectromechanical systems (MEMS), and optical switches. This is a collaboration between engineering scientists at UCSB and applied mathematicians at SMU. Two closely related sets of problems are addressed. The first involves studies of three-dimensional steady interfacial configurations in complex geometries in which evaporation is balanced by condensation in the colder regions. Challenges here include solving nonlinear free-boundary problems where fluid flow and heat transfer are coupled together. Experiments in which simultaneous measurements of heat flux, temperature distributions, and vapor bubble configurations will be conducted. The second set of problems to be addressed involves unsteady motion of constrained interfaces. The proposed research has broad technological impact. This includes improvements in the design of heat pipes for effective cooling of electronic components, and underpinnings for the development of a new type of an optical switching device, which can lead to a dramatic increase in the speed of communication networks. The project will promote learning through research and interdisciplinary scientific collaborations. Graduate students will gain valuable research experience and expand their knowledge beyond their field of study by interacting with both PIs and with students of different backgrounds and perspectives. Outreach is provided to high school students during the summer months as part of the organized UCSB program for prospective engineering and science majors. To further increase the educational value of the project, the results will be incorporated into an educational module as part of Volume 2 of Multimedia Fluid Mechanics, educational software. This project is funded by the Fluid Dynamics and Hydraulics, Interfacial Transport and Thermodynamics and Thermal Transport and Thermal Processing Programs in the Division of Chemical and Transport Systems.