Studies of Viscous and Viscoelastic Potential Flows

粘性和粘弹性势流的研究

• 批准号: 0302837
• 负责人: Daniel Joseph
• 金额: $ 30万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-03-15 至 2008-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0302837&HistoricalAwards=false
• 关键词: Studies; Viscous; Viscoelastic; Potential; Flows

Potential flow approximation or assuming zero vorticity does not necessarily require making an inviscid approximation. In most cases, the effect of viscosity in potential flow is negligible and not important. However, in the cases outlined by the PI, the viscous effect may have subtle but significant consequences. The Pi has pioneered the investigation of what he refers to as the viscous potential flow.This work will be important in cavitation of liquids near capillary collapse (the phenomena under active investigation in the physics community), supercavitation and stress induced cavitation, and other areas such at acoustic effects.

位流近似或假定涡量为零并不一定需要作无粘近似。 在大多数情况下，粘性对势流的影响可以忽略不计，也不重要. 然而，在PI概述的情况下，粘性效应可能会产生微妙但重要的后果。 Pi开创了他所称的粘性势流的研究。这项工作在毛细塌陷附近的液体空化（物理界正在积极研究的现象）、超空化和应力诱导空化以及声学效应等其他领域都很重要。