Lattice Boltzmann Simulation of Nanofluids Natural Convection Heat Transfer in Concentric Annulus
محل انتشار: ماهنامه بین المللی مهندسی، دوره: 26، شماره: 8
سال انتشار: 1392
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 712
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شناسه ملی سند علمی:
JR_IJE-26-8_003
تاریخ نمایه سازی: 17 خرداد 1393
چکیده مقاله:
This study is applied Lattice Boltzmann Method to investigate the natural convection flow utilizing nanofluids in a concentric annulus. A numerical strategy presents for dealing with curved boundariesof second order accuracy for both velocity and temperature fields. The fluid between the cylinders is awater-based nanofluid containing different types of nanoparticles: copper (Cu), alumina (Al2O3), titanium oxide (TiO2) and silver (Ag). The nanofluid is a two component mixture modeled as a singlephase incompressible fluid with the different thermophysical properties. This investigation comparedwith other experimental and found to be in excellent agreement. Result shows The type of nanofluid is a key factor for heat transfer enhancement. In this study the highest values of percentage of heat transfer enhancement are obtained when using silver nanoparticle
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نویسندگان
h.r ashorynejad
Department of Mechanical Engineering, University of Guilan, Rasht, Islamic Republic of Iran
m Sheikholeslami
Department of Mechanical Engineering, Babol University of Technology, Babol, Islamic Republic of Iran
e Fattahi
Department of Mechanical Engineering, Babol University of Technology, Babol, Islamic Republic of Iran