U.S.-Germany Cooperative Research: Control of Bubble Formation, Breakup and Coalescence in Two-Phase Flow and Boiling Using Electric Fields

0129054 Herman该奖项支持Cila赫尔曼和约翰霍普金斯大学的学生与德国汉诺威大学化学工程研究所的Dieter Mewes合作。 该项目将重点关注使用电场来影响气泡的形成以及陆地和微重力条件下的沸腾。 虽然德国和美国的研究人员在光学测量技术方面都有经验，但他们现在打算在气泡形成和运动的电流体动力学控制的新领域进行合作。 这项新技术可能有潜力实现更好的控制气泡的形成，并增加热量，可以从表面转移。 了解电场作用下气泡破裂的机理，有望控制两相流系统中的气泡尺寸，并对相变和两相流系统的正确设计有很大的好处。 工作计划规定研究生广泛参与国际旅行和研究。

0129054HermanThis award supports Cila Herman and students from the Johns Hopkins University to collaborate with Dieter Mewes of the Institute for Chemical Engineering at the University of Hannover, Germany. The project will focus on the use of electric fields to influence bubble formation as well as boiling in terrestrial and microgravity conditions. While both the German and US investigators have experience in optical measurement techniques, they now intend to collaborate in the new area of electrohydrodynamic control of bubble formation and motion. The new technique may has potential for achieving better control over bubble formation and for increasing the amount of heat that can be transferred from a surface. An understanding of the mechanisms of bubble break-up under the influence of electric fields holds the promise of being able to control bubble size in two-phase flow systems and could have great benefits to the proper design of phase-change and two-phase flow systems. The work plan provides for extensive participation by graduate students in the international travel and research.