Effect of Inserting Coiled Wires in Tubes on the Fluid Flow and Heat Transfer Performance of Nanofluids
In the present study, numerical study of Al2O3-water nanofluid flow in different coiled wire inserted tubes are performed to investigate the effects of inserting coiled wires in tubes on the fluid dynamic and heat transfer performance ofv nanofluids. The numerical simulations of nanofluids are perfo...
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University of Sistan and Baluchestan (USB) and the Iranian Society of Mechanical Engineers (ISME)
2016-07-01
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Series: | Transport Phenomena in Nano and Micro Scales |
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Online Access: | http://tpnms.usb.ac.ir/article_2528_451881e9b5e8b9db8b59d2b8a28cdead.pdf |
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doaj-c1d46146504a41bfa47ffe1620d551392021-01-02T02:35:29ZengUniversity of Sistan and Baluchestan (USB) and the Iranian Society of Mechanical Engineers (ISME)Transport Phenomena in Nano and Micro Scales2322-36342322-36342016-07-014291610.7508/tpnms.2016.02.0022528Effect of Inserting Coiled Wires in Tubes on the Fluid Flow and Heat Transfer Performance of NanofluidsHamed Safikhani0Alireza Zare Mehrjardi1Maryam Safari2Department of Mechanical Engineering, Faculty of Engineering, Arak University, Arak, I. R. IranDepartment of Mechanical Engineering, Faculty of Engineering, Arak University, Arak, I. R. IranDepartment of Mechanical Engineering, Isfahan University of Technology, Isfahan, I. R. IranIn the present study, numerical study of Al2O3-water nanofluid flow in different coiled wire inserted tubes are performed to investigate the effects of inserting coiled wires in tubes on the fluid dynamic and heat transfer performance ofv nanofluids. The numerical simulations of nanofluids are performed using two phase mixture model. The flow regime and the wall boundary conditions are assumed to be laminar and constant heat flux respectively. The effects of inserting coiled wires in tubes on different parameters such as heat transfer coefficient, pressure drop, temperature distribution, velocity distribution and secondary flows are presented and discussed. The results show that using coiled wire in tubes leading to increase in about 13.44% but increase the Δp about 14.66% with respect to the flow without nanofluid and coiled wire. Similarly, using nanofluid leading to increase in about 5.52% but increase the Δp about 8.92%. Finally, using both of the mentioned heat transfer enhancement mechanisms leading to increase in about 17.51% but increase the value of Δp about 22.86%.http://tpnms.usb.ac.ir/article_2528_451881e9b5e8b9db8b59d2b8a28cdead.pdfCFDCoiled wiresMixture modelNanofluidTwo phase model |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hamed Safikhani Alireza Zare Mehrjardi Maryam Safari |
spellingShingle |
Hamed Safikhani Alireza Zare Mehrjardi Maryam Safari Effect of Inserting Coiled Wires in Tubes on the Fluid Flow and Heat Transfer Performance of Nanofluids Transport Phenomena in Nano and Micro Scales CFD Coiled wires Mixture model Nanofluid Two phase model |
author_facet |
Hamed Safikhani Alireza Zare Mehrjardi Maryam Safari |
author_sort |
Hamed Safikhani |
title |
Effect of Inserting Coiled Wires in Tubes on the Fluid Flow and Heat Transfer Performance of Nanofluids |
title_short |
Effect of Inserting Coiled Wires in Tubes on the Fluid Flow and Heat Transfer Performance of Nanofluids |
title_full |
Effect of Inserting Coiled Wires in Tubes on the Fluid Flow and Heat Transfer Performance of Nanofluids |
title_fullStr |
Effect of Inserting Coiled Wires in Tubes on the Fluid Flow and Heat Transfer Performance of Nanofluids |
title_full_unstemmed |
Effect of Inserting Coiled Wires in Tubes on the Fluid Flow and Heat Transfer Performance of Nanofluids |
title_sort |
effect of inserting coiled wires in tubes on the fluid flow and heat transfer performance of nanofluids |
publisher |
University of Sistan and Baluchestan (USB) and the Iranian Society of Mechanical Engineers (ISME) |
series |
Transport Phenomena in Nano and Micro Scales |
issn |
2322-3634 2322-3634 |
publishDate |
2016-07-01 |
description |
In the present study, numerical study of Al2O3-water nanofluid flow in different coiled wire inserted tubes are performed to investigate the effects of inserting coiled wires in tubes on the fluid dynamic and heat transfer performance ofv nanofluids. The numerical simulations of nanofluids are performed using two phase mixture model. The flow regime and the wall boundary conditions are assumed to be laminar and constant heat flux respectively. The effects of inserting coiled wires in tubes on different parameters such as heat transfer coefficient, pressure drop, temperature distribution, velocity distribution and secondary flows are presented and discussed. The results show that using coiled wire in tubes leading to increase in about 13.44% but increase the Δp about 14.66% with respect to the flow without nanofluid and coiled wire. Similarly, using nanofluid leading to increase in about 5.52% but increase the Δp about 8.92%. Finally, using both of the mentioned heat transfer enhancement mechanisms leading to increase in about 17.51% but increase the value of Δp about 22.86%. |
topic |
CFD Coiled wires Mixture model Nanofluid Two phase model |
url |
http://tpnms.usb.ac.ir/article_2528_451881e9b5e8b9db8b59d2b8a28cdead.pdf |
work_keys_str_mv |
AT hamedsafikhani effectofinsertingcoiledwiresintubesonthefluidflowandheattransferperformanceofnanofluids AT alirezazaremehrjardi effectofinsertingcoiledwiresintubesonthefluidflowandheattransferperformanceofnanofluids AT maryamsafari effectofinsertingcoiledwiresintubesonthefluidflowandheattransferperformanceofnanofluids |
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