Gas and Vapor Bubbles in Confined Spaces

摘要CTS-9987765 Andrea Prosperetti，约翰霍普金斯大学PI和co-PI的将执行一个理论和实验研究的气体和蒸汽气泡的动力学在封闭的充满液体的空间，如小通道，半封闭的腔室，和其他。 这项工作的动机在于气泡在微流体系统中的可能应用，如泵，阀，致动器等。 气泡在这些应用中的强大潜力在于其固有的简单性、短时间尺度和高功率密度。 其中，它们提供了无需机械移动部件的致动的优点以及将声能转换为机械能的能力。 几个实验旨在突出这种系统的基本属性将进行和数学/数值模型，他们的simulation.The拟议的调查将被认为是一个典型的例子，转移有点经典的理解和方法，以一个新的环境中，减少长度尺度将表示在新的行为。

AbstractCTS-9987765Andrea Prosperetti, Johns Hopkins UniversityThe PI and co-PI's will execute a theoretical and experimental study of the dynamics of gas and vapor bubbles in confined liquid-filled spaces such as small channels, semi-enclosed chambers, and others. The motivation for the work consists in the possible application of bubbles in microfluidic systems such as pumps, valves, actuators and others. The strong potential of bubbles for these applications consists in their intrinsic simplicity, short time scale, and high power density. Among others, they offer the advantage of actuation without mechanical moving parts and the ability to convert acoustic into mechanical energy. Several experiments designed to highlight the fundamental properties of such systems will be conducted and mathematical/numerical models for their simulation will be developed.The proposed investigation is considered to be a prime example of transferring somewhat classical understanding and approaches to a new environment where the reduced length scales will be expressed in new behaviors.