Research Initiation: An Investigation of the Turbulent Flow in a Suddenly Expanding Pipe Via an Orthogonal Decomposition(REU Supplement)

研究启动：通过正交分解研究突然膨胀的管道中的湍流（REU 补充）

• 批准号: 8808872
• 负责人: Mark Glauser
• 金额: $ 7.8万
• 依托单位: Clarkson University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-01 至 1991-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8808872&HistoricalAwards=false
• 关键词: Research; Initiation; Investigation; Turbulent; Flow

A numerical prediction will be carried out to explore the details of the separated flow in the region following the sudden expansion in a pipe. The reattachment zone as well as the recirculating separated region will be predicted numerically with Proper Orthogonal Decomposition. Details of the turbulence structure will be determined for comparison to experimental data, which will be obtained with a single point two-color laser LDA system. This combined approach can be utilized for more general validation of existing codes in this prototype separating flow.

将进行数值预测，以探索管道突然膨胀后区域内分离流动的细节。用适当的正交分解方法对再附着区和再循环分离区进行了数值预测。湍流结构的细节将被确定，以便与实验数据进行比较，实验数据将由单点双色激光LDA系统获得。这种组合方法可以用于对原型分离流程中的现有代码进行更一般的验证。