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Kwak, Sang Kyu
Kyu’s MolSim Lab @ UNIST
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Estimation of heat transfer coefficient of water and ethylene glycol mixture in nanopipe via non-equilibrium coarse-grained molecular dynamics

Author(s)
Go, Eun MinShin, EunhyeCha, JinHyeokKwak, Sang Kyu
Issued Date
2019-09
DOI
10.1016/j.jiec.2019.04.027
URI
https://scholarworks.unist.ac.kr/handle/201301/27455
Fulltext
https://www.sciencedirect.com/science/article/pii/S1226086X1930190X?via%3Dihub
Citation
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.77, no.25, pp.128 - 134
Abstract
Using coarse-grained molecular dynamics, we estimated the heat transfer coefficient (HTC) of coolant, a mixture (50:50 wt%) of water and ethylene glycol (EG), in a Fe nanopipe. In the Newtonian flow regime, the pipe was heated at 325 K. The HTC increased rapidly along the nanopipe at the thermal boundary layer (TBL). The HTC was estimated to be 3.08 × 10 8 W/m 2 K, and those of water and EG were 1.24 × 10 8 and 1.87 × 10 8 W/m 2 K, respectively. A relationship between the TBL and the HTC existed along the pipe and that the heat transfer mainly occurred in the TBL.
Publisher
Korean Society of Industrial Engineering Chemistry
ISSN
1226-086X
Keyword (Author)
CGMD simulationHeat transfer coefficientNanopipe flowThermal conductivity
Keyword
Heat transfer coefficientsMixturesPolyolsThermal conductivityCGMD simulationCoarse-grained molecular dynamicsHeat transfer coefficient (HTC)Nanopipe flowNon equilibriumThermal boundary layerMolecular dynamicsBoundary layersEthyleneEthylene glycol

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