کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
651123 1457405 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental study of surface heating by a high speed exhaust plume
ترجمه فارسی عنوان
مطالعه تجربی از گرم شدن سطح توسط یک اواپراتور با سرعت بالا
کلمات کلیدی
گرم شدن سطح توربین گاز میکرو، جت اکسید آلومینیوم، اشعه مادون قرمز
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی

Airframe surface heating by gas turbine plume is an ongoing issue in aerospace applications. This paper presents the practicability of a smaller scale system based on a micro gas turbine which offers verisimilitude and realism to the actual airframe surface heating by a full scale engine exhaust plume flow. A thin flat plate made from 7075-T6 aluminium alloy was placed at X = 7D downstream of the nozzle exit of the gas turbine. Nozzle exit flow temperature ranged from 850 K to 920 K and Reynolds number over the sample plate ranged from 3.8 × 104 to 2.6 × 105. The average Nusselt number was found to be correlated to CRemPrnCRemPrn with mm = 0.42, nn = 0.33, CC = 0.094 for parallel plume flow over the sample plate at X = 7D and Z = 0D. It was also found that coefficient C can be scaled by velocity magnitude ratio with respect to the plume centre if the sample was positioned away from the centre of the jet plume. Heat transfer by infrared radiation was found to be less than 2% compared to the overall heat flux.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Thermal and Fluid Science - Volume 71, February 2016, Pages 138–145
نویسندگان
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