کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8051123 | 1519371 | 2018 | 45 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Numerical study of local entropy generation in a heated turbulent plane jet developing in a co-flowing stream
ترجمه فارسی عنوان
مطالعه عددی تولید نسبیت آنتروپی در یک جت هواپیما گرم متبلور که در یک جریان مشترک جریان دارد
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مکانیک محاسباتی
چکیده انگلیسی
The present paper numerically investigates the effects of a co-flowing stream on the mean and turbulent flow properties, air entrainment, mixing efficiency, entropy generation rate, and Merit and Bejan numbers of a heated turbulent plane jet emerging in a co-flowing stream. The angle of moving external stream (α) is varied between â10° andâ¯+â¯10°.The first order k-ε turbulence model was used and compared to the existing experimental data. The Finite Volume Method (FVM) was used to discretize the governing equations. The predicted results were consistent with the experimental data. The obtained results showed that the alfa angle directed away from the centerline enhances the mixing. Moreover, the entrainment hypothesis was introduced to describe the development of turbulent jets issuing in a co-flowing air stream. This hypothesis is related to the mass flow rate of the surrounding fluid entrained into the jet. So far, it is obvious that the co-flow has considerably decreased air entrainment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Mathematical Modelling - Volume 62, October 2018, Pages 605-628
Journal: Applied Mathematical Modelling - Volume 62, October 2018, Pages 605-628
نویسندگان
Amel Elkaroui, Syrine Ben Haj Ayech, Mohamed Hichem Gazzah, Nejla Mahjoub Saïd, Georges Le Palec,