Optimisation of crescent-shaped block upstream of the cylindrical hole to enhance film cooling effectiveness using CFD method and genetic algorithm

被引：0
作者：
Zhang, Pengfei [1 ,2 ]
Zhang, Chao [1 ,2 ]
Wang, Zhan [3 ]
机构：
[1] Tianjin Univ Technol, Sch Mech Engn, Tianjin Key Lab Adv Mechatron Syst Design & Intell, Tianjin 300384, Peoples R China
[2] Tianjin Univ Technol, Natl Demonstrat Ctr Expt Mech & Elect Engn Educ, Tianjin 300384, Peoples R China
[3] Shandong Univ, Dept Energy & Power Engn, Jinan 250061, Peoples R China
来源：
PROGRESS IN COMPUTATIONAL FLUID DYNAMICS | 2023年 / 23卷 / 02期
基金：
美国国家科学基金会;
关键词：
gas turbine; film cooling; crescent-shaped block; cooling effectiveness; optimisation; PERFORMANCE; SPANWISE; IMPROVE; HEIGHT;
D O I：
10.1504/PCFD.2023.129764
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This study numerically investigated the optimal geometry of the crescent-shaped upstream block for the typical cylindrical inclined film-cooling hole to improve the cooling performance. The maximum area-averaged cooling effectiveness is pursued using the genetic algorithm combined with the CFD method at two blowing ratios of 0.5 and 1.5. Compared with the reference block, two optimised models obtained under the two blowing ratios increased the area-averaged cooling effectiveness by 127.8% at a blowing ratio of 0.5 and 16.6% at a blowing ratio of 1.5, respectively. The enhancement in the cooling performance mainly results from the improvement in the streamwise coolant coverage and the lateral coolant coverage at blowing ratios of 0.5 and 1.5, respectively.
引用
收藏
页码：111 / 121
页数：12
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