UNS: Interfacial Flows Driven by Antisymmetric Stresses in Ferrofluids

CBET-151113PI：Rinaldi，Carlos铁流体是对磁场做出响应的流体。本项目研究悬浮液体中由磁性颗粒组成的铁磁流体的流体动力学。该项目的重点是流体在流体-空气界面附近的运动，在实验上观察到界面附近的流动与主体流体中的流动之间有趣的联系。各种界面附近的磁流体速度将在明确定义的流动中测量。结果将被用来检验描述界面适当动力学条件的理论的有效性。该项目将为研究生和本科生提供研究培训，并将开发探索磁流体流体动力学的基于Web的教学视频。该项目的目标是在实验上验证在磁流体-空气、磁流体-非磁流体和磁流体-磁流体界面上的线性和内部角动量的界面边界条件。将测量各种原型流在界面附近和主体流体中的速度分布，并将结果用于开发可扩展到更复杂几何形状的模型，包括磁流体液滴。研究结果有助于阐明用于表现出反对称应力的流体系统的适当界面条件，进而可将其纳入涉及具有界面的磁流体的各种应用的工程设计中。

CBET - 151113PI: Rinaldi, CarlosFerrofluids are fluids that respond to magnetic fields. This project examines the fluid dynamics of a ferrofluid composed of magnetic particles in a suspending liquid. The project focuses on the motion of the fluid near a fluid-air interface where interesting connections have been observed experimentally between flow near the interface and flow in the bulk fluid. The velocity of the ferrofluid near various kinds of interfaces will be measured in well-defined flows. The results will be used to test the validity of theory that describes the appropriate dynamical conditions at the interface. The project will provide research training to graduate and undergraduate students and will develop Web-based educational videos that explore the fluid dynamics of ferrofluids.The objective of the project is to validate experimentally appropriate interfacial boundary conditions on linear and internal angular momentum at ferrofluid-air, ferrofluid-non-ferrofluid, and ferrofluid-ferrofluid interfaces. Velocity profiles near the interfaces and in the bulk fluids will be measured for various prototype flows, and results will be used to develop models that can be extended to more complicated geometries, including ferrofluid droplets. The results should help clarify the appropriate interfacial conditions to use for fluid systems that exhibit antisymmetric stresses, which, in turn, can be incorporated into engineering design of various applications involving ferrofluids with interfaces.