北京航空航天大学学报 ›› 2014, Vol. 40 ›› Issue (1): 48-53.

• 论文 • 上一篇    下一篇

复合弯扭涡轮叶片尾缝的快速建模

张宝源, 席平, 杨炯   

  1. 北京航空航天大学 机械工程及自动化学院, 北京 100191
  • 收稿日期:2013-03-13 出版日期:2014-01-20 发布日期:2014-01-22

Rapid modeling of trailing edge slots in bowed-twisted turbine blade

Zhang Baoyuan, Xi Ping, Yang Jiong   

  1. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2013-03-13 Online:2014-01-20 Published:2014-01-22

摘要: 尾缝是涡轮叶片中的重要冷却结构.为解决复合弯扭叶片尾缝的精确建模问题并提高其建模效率,提出了包含尾缝工具体创建和尾缝窗口创建过程的创成式尾缝快速建模方法.首先通过叶身内外型截面线自动匹配算法、叶盆叶背曲线方位判断算法,创建具有和叶身相同或相近弯扭状况的尾缝工具体.之后借助自定义的数据结构记录各组尾缝窗口信息,创建多组不同规格的尾缝窗口,完成尾缝建模.最后使用UG Open API工具开发了尾缝快速建模程序,并通过实例验证了所提出方法的可行性.

Abstract: Trailing edge slots are important cooling structures in turbine blade. In order to realize the precise modeling of these structures in bowed-twisted turbine blade and improve the modeling efficiency, a rapid generative modeling method was proposed, including the tool body creation step and the slot windows creation step. Firstly, the tool body with the same or similar bowed-twisted condition as the blade was created via the matching algorithm of inside and outside blade profiles and the direction determining algorithm of pressure and suction sides. Then the groups of slot windows with different sizes were created by employing specific data structure to store the window groups information. Finally, a rapid trailing edge slots modeling program was de-veloped based on UG Open API, and the modeling result validates the feasibility of the method.

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