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Thermal performance of four-lobe swirl generator and its transition parts under a different type of nanofluids

Due to the importance of promoting the thermal performance of heat exchangers, innovating a new technique is the main goal of many researchers. In swirl flow techniques, keeping the pressure drop at the practical level still requires more and more attention. In the current paper, a numerical study i...

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Main Authors: Diabis, Farag. A, Abu Talib, Abd Rahim, Al-Tarazi, Yazan, Mazlan, Norkhairunnisa, Supeni, Eris Elianddy
Format: Article
Published: Semarak Ilmu Publishing 2022
Online Access:http://psasir.upm.edu.my/id/eprint/103711/
https://semarakilmu.com.my/journals/index.php/CFD_Letters/article/view/805
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spelling my.upm.eprints.1037112023-05-02T06:06:33Z http://psasir.upm.edu.my/id/eprint/103711/ Thermal performance of four-lobe swirl generator and its transition parts under a different type of nanofluids Diabis, Farag. A Abu Talib, Abd Rahim Al-Tarazi, Yazan Mazlan, Norkhairunnisa Supeni, Eris Elianddy Due to the importance of promoting the thermal performance of heat exchangers, innovating a new technique is the main goal of many researchers. In swirl flow techniques, keeping the pressure drop at the practical level still requires more and more attention. In the current paper, a numerical study is conducted to explore the impact of a novel lobe swirl generator and its transition parts on forced convective heat transfer and friction factor in a circular pipe subjected to constant heat flux.The swirl mechanism is investigated at the pitch to a diameter of P/D = 8 as the optimum design. The transition part under several parameters of variable beta (β), transition multiplier (n= 0.5) and variable helix (t = 1) have been adopted. The effect of SiO2, Al2O3, and CuO volume concentrations (1 to 5%) in water under various Reynolds numbers (Re) from 15,000 to 35,000 have been carried out. The turbulent swirling flow was modelled using the applicable shear-stress transport (SST) k-ω. The outcome demonstrated an enhancement in heat transfer value ranging from 1.35 to 1.87 with an increased pressure drop value from 1.23 to 1.67. It was also found that using SiO2/water at 5% volume concentration and Re 15000 created the highest thermal performance, with a significant factor of 1.67. Semarak Ilmu Publishing 2022 Article PeerReviewed Diabis, Farag. A and Abu Talib, Abd Rahim and Al-Tarazi, Yazan and Mazlan, Norkhairunnisa and Supeni, Eris Elianddy (2022) Thermal performance of four-lobe swirl generator and its transition parts under a different type of nanofluids. CFD Letters, 14 (11). 63 - 74. ISSN 2180-1363 https://semarakilmu.com.my/journals/index.php/CFD_Letters/article/view/805 10.37934/cfdl.14.11.6374
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description Due to the importance of promoting the thermal performance of heat exchangers, innovating a new technique is the main goal of many researchers. In swirl flow techniques, keeping the pressure drop at the practical level still requires more and more attention. In the current paper, a numerical study is conducted to explore the impact of a novel lobe swirl generator and its transition parts on forced convective heat transfer and friction factor in a circular pipe subjected to constant heat flux.The swirl mechanism is investigated at the pitch to a diameter of P/D = 8 as the optimum design. The transition part under several parameters of variable beta (β), transition multiplier (n= 0.5) and variable helix (t = 1) have been adopted. The effect of SiO2, Al2O3, and CuO volume concentrations (1 to 5%) in water under various Reynolds numbers (Re) from 15,000 to 35,000 have been carried out. The turbulent swirling flow was modelled using the applicable shear-stress transport (SST) k-ω. The outcome demonstrated an enhancement in heat transfer value ranging from 1.35 to 1.87 with an increased pressure drop value from 1.23 to 1.67. It was also found that using SiO2/water at 5% volume concentration and Re 15000 created the highest thermal performance, with a significant factor of 1.67.
format Article
author Diabis, Farag. A
Abu Talib, Abd Rahim
Al-Tarazi, Yazan
Mazlan, Norkhairunnisa
Supeni, Eris Elianddy
spellingShingle Diabis, Farag. A
Abu Talib, Abd Rahim
Al-Tarazi, Yazan
Mazlan, Norkhairunnisa
Supeni, Eris Elianddy
Thermal performance of four-lobe swirl generator and its transition parts under a different type of nanofluids
author_facet Diabis, Farag. A
Abu Talib, Abd Rahim
Al-Tarazi, Yazan
Mazlan, Norkhairunnisa
Supeni, Eris Elianddy
author_sort Diabis, Farag. A
title Thermal performance of four-lobe swirl generator and its transition parts under a different type of nanofluids
title_short Thermal performance of four-lobe swirl generator and its transition parts under a different type of nanofluids
title_full Thermal performance of four-lobe swirl generator and its transition parts under a different type of nanofluids
title_fullStr Thermal performance of four-lobe swirl generator and its transition parts under a different type of nanofluids
title_full_unstemmed Thermal performance of four-lobe swirl generator and its transition parts under a different type of nanofluids
title_sort thermal performance of four-lobe swirl generator and its transition parts under a different type of nanofluids
publisher Semarak Ilmu Publishing
publishDate 2022
url http://psasir.upm.edu.my/id/eprint/103711/
https://semarakilmu.com.my/journals/index.php/CFD_Letters/article/view/805
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score 13.223943

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