کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7056133 1458049 2016 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A numerical study on various pin-fin shaped surface air-oil heat exchangers for an aero gas-turbine engine
ترجمه فارسی عنوان
مطالعات عددی بر مبدلهای حرارتی هوای نفتی مختلف برای یک توربو گاز توربین هواپیما
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
In this study, the performance of a surface air-oil heat exchanger for an aero gas-turbine engine having plate- and pin-fin shaped geometries was investigated numerically. Basic heat-transfer and pressure-drop characteristics were examined using a simplified channel model. Performance of pin-shaped fins is compared with that of the plate fin as a baseline. Using a parametric study, optimal fin pitches of the pin-fin geometries in stream- and span-wise directions were determined. Finally, the high-speed bypass effect of the surface air-oil heat exchanger was calculated using the geometry of a real engine. Aero-thermal performance for such as the heat transfer rate, pressure-drop along the bypass stream of the engine, and distorted velocity boundary layer profiles, were evaluated quantitatively. The entropy generation rate due to the surface air-oil heat exchanger is summarized to assess the irreversibility loss inside the bypass stream and the cooler region.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 93, February 2016, Pages 637-652
نویسندگان
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