کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
652212 | 885009 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of squealer rim height on aerodynamic losses downstream of a high-turning turbine rotor blade
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of squealer rim height on aerodynamic losses downstream of a high-turning turbine rotor blade Effects of squealer rim height on aerodynamic losses downstream of a high-turning turbine rotor blade](/preview/png/652212.png)
چکیده انگلیسی
The effects of squealer rim height on three-dimensional flows and aerodynamic losses downstream of a high-turning turbine rotor blade have been investigated for a typical tip gap-to-chord ratio of h/c = 2.0%. The squealer rim height-to-chord ratio is changed to be hst/c = 0.00 (plane tip), 1.37, 2.75, 5.51, and 8.26%. Results show that as hst/c increases, the tip leakage vortex tends to be weakened and the interaction between the tip leakage vortex and the passage vortex becomes less severe. The squealer rim height plays an important role in the reduction of aerodynamic loss when hst/c ⩽ 2.75%. In the case of hst/c ⩾ 5.51%, higher squealer rim cannot provide an effective reduction in aerodynamic loss. The aerodynamic loss reduction by increasing hst/c is limited only to the near-tip region within a quarter of the span from the casing wall.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Thermal and Fluid Science - Volume 32, Issue 8, September 2008, Pages 1440-1447
Journal: Experimental Thermal and Fluid Science - Volume 32, Issue 8, September 2008, Pages 1440-1447
نویسندگان
Sang Woo Lee, Byoung Joo Chae,