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Turbulence Model Evaluation for Numerical Modelling of Turbulent Flow and Heat Transfer of Nanofluids


Veröffentlichungsart
Begutachtete Publikation

Fakultät/Einrichtung
Natur und Technik

Institutszugehörigkeit
Julius Robert Mayer - Institut für Energietechnik
http://www.hs-bremen.de/internet/de/forschung/einrichtungen/jrmi/

Verfasser
Smolen, Slawomir, Prof. Dr.-Ing.
Baars, Albert, Prof. Dr.
Cieslinski, Janusz T., Prof. Dr.-Ing.
Boertz, Hendrik, Msc-Eng

Autor_innen, Jahr, Titel
S. Smolen, H. Boertz, A Baars, J.T. Cieslinski
Turbulence Model Evaluation for Numerical Modelling of Turbulent Flow and Heat Transfer of Nanofluids
2016

Weitere Informationen
Advances in Mechanical and Energy Engineering Applied Mechanics and Materials Vol. 831, pp 165-180, 2016,
© (2016) Trans Tech Publications Ltd, Switzerland
ISBN 978-3-03635-796-4
ISSN print 1660-9336
ISSN od 1660-9336
ISSN web 1662-7482

Anmerkung
DOI: 10.4028/www.scientific.net/AMM.831.165


Abstract:
In this work, Nusselt number and friction factor are calculated numerically for turbulent pipe flow (Reynolds number between 6000 and 12000) with constant heat flux boundary condition using nanofluids. The nanofluid is modelled with the single-phase approach and the simulation results are compared with experimental data. Ethylene glycol and water, 60:40 EG/W mass ratio, as base fluid and SiO2 nanoparticles are used as nanofluid with particle volume concentrations ranging from 0% to 10%. A prior turbulence model evaluation of k-ε-, k-ω- and k-ω-SST-model revealed substantial deviations between the tested models and resulted in applying the k-ω-SST-model for the simulation. Nusselt number predictions for the nanofluid are in agreement with experimental results and a conventional single-phase correlation. The mean deviation is in the range of 5%. Friction factor values show a mean deviation of 1.5% to a conventional single-phase correlation, however, they differ considerably from the nanofluid experimental data.

 

 

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