HEAT TRANSFER ENHANCEMENT IN AN EQUILATERAL TRIANGULAR DUCT BY USING AN Al2O3/WATER NANOFLUID: EFFECT OF NANOPARTICLE SHAPE AND VOLUME FRACTION
Küçük Resim Yok
Tarih
2020
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Begell House Inc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Forced convective heat transfer of an Al2O3/water nanofluid, having different shapes of nanoparticles including blade, brick, cylindrical, platelet, and spherical, flowing in a three-dimensional (3D) equilateral triangular duct has been studied numerically. The Al2O3 nanoparticle is dispersed with a ratio of 1.0%, 2.0%, and 3.0%. The Reynolds number is in the range of 100-500. A constant heat flux of 420 W/m(2) is delivered to the whole walls. The analysis is made for determining how the heat transfer and flow features are affected by different nanoparticle shapes and volume fractions. Convective heat transfer coefficient, Nusselt number, Darcy friction factor, pumping power, and performance evaluation criterion (PEC) in the duct are analyzed. The results of the study reveal that the nanoparticle shape of the platelet shows the greatest heat transfer enhancement. At the highest Reynolds number, the average Nusselt number enhances up to 25% by using platelet nanoparticle shape when compared to the pure water. Also, heat transfer in the duct increases by increasing the nanoparticle volume fraction. Also, the study is compatible with the outcomes of literature regarding heat transfer and flow features.
Açıklama
Anahtar Kelimeler
optimization, equilateral triangular duct, nanoparticle shape, heat transfer
Kaynak
Heat Transfer Research
WoS Q Değeri
Q2
Scopus Q Değeri
Q3
Cilt
51
Sayı
8
