بهينه سازي انتقال حرارت ميكرومبادله كن دو لايه اي مستقيم و مارپيچ

Heat Transfer Optimization for Straight and Helical Double Layer Micro-Channel Heat Sink

بهينه سازي با تغيير پارامتر هاي هندسي و هيدروديناميكي جريان ميكروكانال انجام گرفته شده است. معادلات حاكم به صورت عددي و به روش حجم محدود حل شده اند. طبق نتايج حالت مستقيم، تعداد كانال، عرض دنده و سرعت ورودي كانال پاييني تاثير قابل توجهي در عملكرد حرارتي ميكروكانال مستقيم خواهند داشت. از آنجاييكه هندسه مارپيچ در ادبيات فن تا به حال بررسي نشده است، لذا در اين تحقيق به بررسي هندسه مارپيچ در عملكرد خنك كاري ميكروكانال نيز پرداخته شده است. در اين حالت نيز نتايج نشان مي دهد كه هرچه شعاع انحنا كاهش يابد خنك كاري بهبود مي يابد.

The optimization is done by changing geometric and hydrodynamic parameters of the micro-channel flow. The governing equations are solved numerically by finite volume method. Results show that the number of channels, the width of the ribs and the coolant velocity in bottom channel will have considerable impact on cooling performance of the straight micro-channel. Also, since spiral geometry has not been studied in the literature until now, the spiral geometry in the micro-channel cooling performance has also been studied in this study. In this case, the results also show that the lower the curvature radius, the cooling will improve. The optimization is done by changing geometric and hydrodynamic parameters of the micro-channel flow. The governing equations are solved numerically by finite volume method. Results show that the number of channels, the width of the ribs and the coolant velocity in bottom channel will have considerable impact on cooling performance of the straight micro-channel. Also, since spiral geometry has not been studied in the literature until now, the spiral geometry in the micro-channel cooling performance has also been studied in this study. In this case, the results also show that the lower the curvature radius, the cooling will improve.