TY - JOUR
T1 - Large eddy simulation of turbulent natural convection between symmetrically heated vertical parallel plates for water
AU - Kogawa, Takuma
AU - Okajima, Junnosuke
AU - Komiya, Atsuki
AU - Armfield, Steven
AU - Maruyama, Shigenao
N1 - Funding Information:
This research was supported by Grant-in-Aid for JSPS Fellows number 15J04088. This research used computational resources of the SGI UV2000 provided by the Institute of Fluid Science, Tohoku University.
Publisher Copyright:
© 2016 Elsevier Ltd. All rights reserved.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - The boundary layer interaction effect of the turbulent natural convection in the gap between symmetrically heated vertical parallel plates was evaluated using a numerical simulation in the present study. A large eddy simulation was conducted, and a Vreman model was used as a dynamic subgrid-scale model. The numerical simulation was validated thorough a comparison with the experimental result for the turbulent natural convection adjacent to a single vertical heated plate. The boundary interaction effect was investigated by varying the gap between the parallel plates. The results showed that the flow for vertical parallel plates had a lower heat transfer rate than a vertical plate flow. The boundary layers and vortex structure were evaluated. The heat transfer was reduced as a result of a reduced velocity gradient in the outer region of the velocity boundary layer. The averaged heat transfer was similar to that of the laminar flow.
AB - The boundary layer interaction effect of the turbulent natural convection in the gap between symmetrically heated vertical parallel plates was evaluated using a numerical simulation in the present study. A large eddy simulation was conducted, and a Vreman model was used as a dynamic subgrid-scale model. The numerical simulation was validated thorough a comparison with the experimental result for the turbulent natural convection adjacent to a single vertical heated plate. The boundary interaction effect was investigated by varying the gap between the parallel plates. The results showed that the flow for vertical parallel plates had a lower heat transfer rate than a vertical plate flow. The boundary layers and vortex structure were evaluated. The heat transfer was reduced as a result of a reduced velocity gradient in the outer region of the velocity boundary layer. The averaged heat transfer was similar to that of the laminar flow.
KW - Boundary layer interaction
KW - Large eddy simulation
KW - Turbulent natural convection
KW - Vertical parallel plates
KW - Vreman model
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U2 - 10.1016/j.ijheatmasstransfer.2016.04.083
DO - 10.1016/j.ijheatmasstransfer.2016.04.083
M3 - Article
AN - SCOPUS:84973638295
VL - 101
SP - 870
EP - 877
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
SN - 0017-9310
ER -