بررسی عددی فرآیند ذوب ترکیبات حاوی نانو ذرات برای توسعه روند تغییر فاز

Subject Areas : Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering

نادر پورمحمود ¹ (دانشیار، دانشکده مکانیک، دانشگاه ارومیه)
ناصر مصطفوی نیا ² (دانشجوی دکتری، دانشکده مکانیک، دانشگاه ارومیه)
امیر حسن زاده ³ (دانشجوی دکتری، دانشکده مکانیک، دانشگاه ارومیه)

Received: 2015-11-04 Accepted : 2015-11-04 Published : 2014-12-22

Keywords: پارافین, نرخ ذوب, نانو ذره,

Abstract :

در کار ارائه شده، فرآیند ذوب ترکیبات حاوی نانو ذرات (NePCM) در یک حفرهمربعی تحت زوایای مختلف در اثر اعمال دو جفت منبع حرارتی چاه-چشمه بر روی دیواره های افقی، بصورت عددی مورد بررسی قرار گرفته است. برای بررسی اثر تغییر در موقعیت المان­های چاه-چشمه روی دیوارهای افقی بر نسبت کسری مابع، چهار چیدمان مختلف از المانهای مذکور بکار گرفته شده است. در مورد اول، چشمه ها و چاه ها به طور جداگانه روی دیوارهای افقی قرارگرفته اند. شرایط محیطی در مورد دوم بدین صورت است که المان­های چشمه و چاه، بطور متناوب روی دیوارهای افقی چیده شده­ اند.در چیدمان سوم، چشمه­ها در سمت چپ المان­های چاه قرار گرفته و نهایتا در مورد شکل چهارم ، عناصر چشمه و چاه همه در پایین دیوار­های افقی قرار می گیرند. نتایج نشان می­دهد که در چیدمان اول با استفاده از 2 درصد وزنی نانو ذرات  Al2O3، در مقایسه با بقیه موارد، بیشترین نسبت کسری مایع بدست می­آید.

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