چکیده مقاله
Porous microchannel heat sinks MCHSS and nanofluids are promising approaches for high density thermal management, yet their combined thermo hydraulic performance remains insufficiently understood This study presents a three dimensional numerical investigation of MCHSS incorporating porous substrates, carbon nanotubes CNT , and water nanofluids The effects of porous layer thickness, fin thickness, nanofluid volume fraction, and inlet velocity on pressure drop, Reynolds number, and heat transfer coefficient are systematically analyzed Results demonstrate that increasing porous thickness consistently enhances the heat transfer coefficient exponentially However, it simultaneously increases pressure drop, with no optimal thickness identified within the studied range Fin thickness modulates both hydrodynamics and heat transfer, with thicker fins enabling improved heat spreading and amplifying the benefits of porous coatings Nanofluid loading increases both viscosity and effective thermal conductivity, yielding higher pumping requirements but substantial thermal enhancement Inlet velocity further influences these trends, with the strongest sensitivity to porous thickness observed near 1 2 m/s, corresponding to a Darcy Forchheimer crossover regime The findings highlight the delicate balance between hydraulic penalty and thermal augmentation in porous MCHSS with nanofluids The correlations and design insights provided here offer a valuable framework for optimizing compact cooling systems in electronics, power devices, and other high flux applications
کلیدواژهها
نویسندگان
Hooman Hadidi
Department of Mechanical Engineering, Kermanshah University of Technology, Kermanshah, ۶۷۱۵۶ ۸۵۴۲۰, Iran
شیوه ارجاع
Hadidi, Hooman,1404,Numerical Analysis of Heat Transfer Enhancement and Pressure Loss in Porous Microchannel Heat Sinks Using Carbon Nanotube Nanofluids,1st International & 7th National conference on Mechanical-civil engineering and advanced technologies,Esfarayen
ارائهشده در
مجموعه مقالات اولین کنفرانس بین المللی و هفتمین کنفرانس ملی مهندسی مکانیک، عمران و فناوری های پیشرفته19 آبان 1404 · اسفراین