Detail publikace
Numerical study on heat transfer and flow characteristics of nanofluids in a circular tube with trapezoid ribs
Wang, W. Zhang, B. Cui, L.H. Zheng, H.W. Klemeš, J.J. Wang, J.
Anglický název
Numerical study on heat transfer and flow characteristics of nanofluids in a circular tube with trapezoid ribs
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
This study aims to investigate heat transfer and flow characteristics of ethylene glycol/water (EGW) and CuO-EGW nanofluids in circular tubes with and without trapezoid ribs. Nusselt number and friction factor in tubes with trapezoid ribs are analysed under a constant heat flux by changing rib bottom angles. This study compares the convective heat transfer coefficients of 6 vol.% CuO-EGW nanofluid and base fluid. It is found that under a constant Reynolds number, the Nusselt number and friction factor for CuO-EGW nanofluid and base fluid increase with an increase in the inclination angle. The Nusselt number for the CuO-EGW nanofluid in the tube with 75° rib bottom angle averagely increases by 135.8% compared to that in the smooth tube, and the performance evaluation criterion is 1.64. © 2021 Wei Wang et al., published by De Gruyter 2021.
Anglický abstrakt
This study aims to investigate heat transfer and flow characteristics of ethylene glycol/water (EGW) and CuO-EGW nanofluids in circular tubes with and without trapezoid ribs. Nusselt number and friction factor in tubes with trapezoid ribs are analysed under a constant heat flux by changing rib bottom angles. This study compares the convective heat transfer coefficients of 6 vol.% CuO-EGW nanofluid and base fluid. It is found that under a constant Reynolds number, the Nusselt number and friction factor for CuO-EGW nanofluid and base fluid increase with an increase in the inclination angle. The Nusselt number for the CuO-EGW nanofluid in the tube with 75° rib bottom angle averagely increases by 135.8% compared to that in the smooth tube, and the performance evaluation criterion is 1.64. © 2021 Wei Wang et al., published by De Gruyter 2021.
Klíčová slova anglicky
nanofluids; trapezoid rib; heat transfer enhancement; angle; friction factor
Vydáno
26.04.2021
Nakladatel
DE GRUYTER POLAND SP Z O OBOGUMILA ZUGA 32A STR, 01-811 WARSAW, MAZOVIA, POLAND
Místo
DE GRUYTER POLAND SP Z O OBOGUMILA ZUGA 32A STR, 01-811 WARSAW, MAZOVIA, POLAND
ISSN
2391-5471
Ročník
1
Číslo
19
Strany od–do
224–233
Počet stran
10
BIBTEX
@article{BUT172053,
author="Jiří {Klemeš} and Jin {Wang},
title="Numerical study on heat transfer and flow characteristics of nanofluids in a circular tube with trapezoid ribs",
year="2021",
volume="1",
number="19",
month="April",
pages="224--233",
publisher="DE GRUYTER POLAND SP Z O OBOGUMILA ZUGA 32A STR, 01-811 WARSAW, MAZOVIA, POLAND",
address="DE GRUYTER POLAND SP Z O OBOGUMILA ZUGA 32A STR, 01-811 WARSAW, MAZOVIA, POLAND",
issn="2391-5471"
}