U-bend Shaped Turbine Blade Cooling Passage Optimization
U-bend Shaped Turbine Blade Cooling Passage Optimization
复制标题
U型弯涡轮叶片冷却通道优化
DOI：
10.2514/6.2008-5926
复制
发表时间：
2008
影响因子：
2.6
通讯作者：
P. Ireland
中科院分区：
文献类型：
--
作者：
H. Namgoong;C. Son;P. Ireland
在机械和航空航天系统的许多工程应用中都遇到过180度的u形弯道。一个重要的例子是在现代涡轮叶片冷却系统中，部分由于这个原因，u型弯头已经成为许多流体动力学和传热研究的主题。弯流结合了许多复杂的流体动力学现象，大多数研究都集中在对流动物理的理解或提高数值模拟的精度上。然而，关于u型弯头形状优化的研究报告相对较少。本次研究的主要目的是寻找一种压力损失最小的三维u型弯管结构。采用DOE （Design of Experiment）技术和代理设计空间模型代替直接优化，减少了计算时间。
The U-bend duct which turns flow through 180 is encountered in many engineering applications in mechanical and aerospace systems. One important example is in modern turbine blade cooling systems and, partly for this reason, the U-bend has been the subject of many fluid dynamic and heat transfer investigations. The bend flow combines many complex fluid dynamic phenomena and most of the investigations have focused on understanding of the flow physics or improving the accuracy of numerical simulations. However, reports of research into shape optimization of the U-bend are relatively sparse. The main purpose of the present investigation was to focus on finding a 3-D U-bend configuration with minimum pressure loss. The DOE (Design of Experiment) technique and surrogate design space model have been successfully applied by the authors, instead of direct optimization, to reduce computational time.