UNS: Interfacial Flows Driven by Antisymmetric Stresses in Ferrofluids

[参考译文]：铁流体是对磁场有响应的流体。本项目研究悬浮液体中由磁性粒子组成的铁磁流体的流体动力学。该项目侧重于流体在流体-空气界面附近的运动，在该界面附近的流动和散装流体中的流动之间已经观察到有趣的联系。铁磁流体在各种界面附近的速度将在定义良好的流动中测量。所得结果将用于检验描述界面处适当动力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，并将开发基于网络的教育视频，探索铁磁流体的流体动力学。该项目的目的是通过实验验证在铁磁流体-空气、铁磁流体-非铁磁流体和铁磁流体-铁磁流体界面上线性和内部角动量的适当界面边界条件。将测量界面附近和散装流体中的速度剖面，用于各种原型流动，结果将用于开发可扩展到更复杂几何形状的模型，包括铁磁流体液滴。结果应该有助于澄清适当的界面条件，用于表现出反对称应力的流体系统，这反过来又可以纳入涉及具有界面的铁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.