دانلود مقاله ISI انگلیسی شماره 92807
ترجمه فارسی عنوان مقاله

الگوریتم ژنتیک بهینه سازی اثر خنک سازی فیلم بر روی تیغه چرخشی

عنوان انگلیسی
Genetic algorithm optimization of film cooling effectiveness over a rotating blade
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
92807 2018 8 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : International Journal of Thermal Sciences, Volume 125, March 2018, Pages 248-255

ترجمه کلمات کلیدی
الگوریتم ژنتیک، خنک کننده فیلم، تیغه دوار شبیه سازی عددی،
کلمات کلیدی انگلیسی
Genetic algorithm; Film cooling; Rotating blade; Numerical simulation;
پیش نمایش مقاله
پیش نمایش مقاله  الگوریتم ژنتیک بهینه سازی اثر خنک سازی فیلم بر روی تیغه چرخشی

چکیده انگلیسی

Shape optimization of a laterally diffused hole has been performed to enhance the film cooling effectiveness under rotating conditions. The blade rotates at three different speeds of 0, 300 and 500 rpm. The shape of the hole is defined by three geometric design variables, namely, the injection angle of the hole, the lateral expansion angle and the ratio of the length to the diameter of the hole. The numerical results for the film-cooling effectiveness were validated by a comparison with the available experimental data. More than sixty designs within the design spaces are selected and numerically simulated to calculate the objective function at three rotational speeds. The objective function, which is defined as the area averaged film-cooling effectiveness, is approximated using curve fitting method (CFM) to search for the optimal point. The optimizations are carried out for three different rotational speed using genetic algorithm (GA) method. The film-cooling effectiveness has been successfully improved with the CFM-GA optimization at three rotational speeds as compared to the reference cylindrical hole.