Rotating Channel Flow

旋转通道流量

• 批准号: 9422442
• 负责人: Russell Donnelly
• 金额: $ 17.22万
• 依托单位: University of Oregon Eugene
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-06-15 至 2000-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9422442&HistoricalAwards=false
• 关键词: Rotating; Channel; Flow

ABSTRACT CTS-9422442 Donnelly University of Oregon This work of a careful quantitative study of the evolution and dynamics of vortices in rotating channel flow, including, transition to turbulence, which simulations suggest involves a sequence of time-dependent states of traveling waves of both long (wavy vortices) and short (twisting vortices) wavelength. There has been considerable activity in numerical modeling of the transition process and it is critical to obtain detailed quantitative information from experiments in this process. This work can impact upon our understanding of modeling flows undergoing transition. The long range applications of such work involves understanding heat transfer is rotating systems such as turbine blades and impellers of centrifugal pumps.

本文对旋转通道流动中涡的演化和动力学进行了细致的定量研究，包括向湍流的过渡，模拟表明，这涉及到长波长（波状涡）和短波长（扭转涡）的一系列随时间变化的行波状态。在转变过程的数值模拟方面已经有相当多的活动，在这个过程中从实验中获得详细的定量信息是至关重要的。这项工作可以影响我们对正在进行转换的建模流的理解。这种工作的长期应用包括理解旋转系统的传热，如涡轮叶片和离心泵的叶轮。