Cooling of the Endwall Separation Region Upstream of Obstacles

障碍物上游端壁分离区域的冷却

• 批准号: 8707138
• 负责人: Wayne Eckerle
• 金额: $ 7万
• 依托单位: Clarkson University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-09-01 至 1990-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8707138&HistoricalAwards=false
• 关键词: Cooling; Endwall; Separation; Region; Upstream

This proposal describes an experimental study of the forced convection heat transfer on a surface in the neighborhood of a blunt body. Such situations occur, for example, in gas turbines where the airfoil-like turbine blades attach to their base surface. The velocity distribution will be measured as a supplement to the heat transfer measurements. In certain of the experiments, a film of air will be injected in the blade- surface attachment region. The film protects the surface from the hot gases passing through the turbine. The expected end result of the work is a set of guidelines for gas turbine designers for minimizing the heating of the surface by the hot gases.

本文介绍了钝体附近表面强迫对流换热的实验研究。例如，这种情况发生在燃气轮机中，其翼型状的涡轮叶片附着在其底面上。速度分布的测量将作为传热学测量的补充。在某些实验中，一层空气膜将被注入叶片表面附着区。这种薄膜保护表面不受流经涡轮机的热气体的影响。这项工作的预期最终结果是为燃气轮机设计者提供一套指导方针，以最大限度地减少热气体对表面的加热。