Journal
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume 124, Issue -, Pages 980-989Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2018.04.022
Keywords
Nanofluid; Helical twisted tape; Numerical simulation; Turbulent flow; Forced convection
Categories
Funding
- National Sciences Foundation of China (NSFC) [U1610109]
- Yingcai Project of CUMT [YC2017001]
- PAPD
- UOW Vice-Chancellor's Postdoctoral Research Fellowship
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Nanofluid heat transfer augmentation in a heat exchanger equipped with helical twisted tape turbulator is simulated numerically via Finite volume method. Impacts of width ratio, Reynolds number and pitch ratio on nanofluid hydrothermal behavior were illustrated. Related formulas for Nusselt number and Darcy factor are provided according to obtained results. Outputs show that thermal boundary layer thickness decreases with augment of width ratio due to stronger secondary flow. Better nanofluid mixing can be obtained for lower values of pitch ratio. (C) 2018 Elsevier Ltd. All rights reserved.
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