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TECHNICAL PAPERS

Comparison of Different Subgrid-Scale Models of Large Eddy Simulation for Indoor Airflow Modeling

[+] Author and Article Information
Mingde Su, Qingyan Chen

Building Technology Program, Massachusetts Institute of Technology, Cambridge, MA 02139-4307

Che-Ming Chiang

Department of Architecture, National Cheng-Kung University, Tainan, 701, Taiwan

J. Fluids Eng 123(3), 628-639 (Mar 15, 2001) (12 pages) doi:10.1115/1.1378294 History: Received October 27, 2000; Revised March 15, 2001
Copyright © 2001 by ASME
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References

Figures

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Relationship between the filtered and unfiltered velocities
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The schematic of the room with forced convection
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Mean airflow pattern in the middle plane of the room
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Comparison of the computed mean and fluctuation velocity profiles with the experimental data at x=H and 2H sections
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The mean airflow pattern and dimensionless air temperature distribution in the middle section of the cavity. (T=(t−tc)/(th−tc), where th and tc are the temperatures of the hot wall and cold wall, respectively.)
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The computed mean profiles of (a) mean air velocity, (b) turbulent kinetic energy, and (c) dimensionless temperature in the mid-height of the cavity and the corresponding experimental data
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The schematic of a two-person office with displacement ventilation
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The (a) mean and (b) instantaneous airflow patterns in the middle section of the office
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The (a) mean and (b) instantaneous airflow patterns at the section near the side wall of the office
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Comparison of the computed mean air velocity profiles with the experimental data at five different locations in the room (m/s)
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Comparison of the computed mean air temperature with the experimental data at five different locations in the room (T=(t−ts)/(texh−ts),ts=17.0°C,texh=26.7°C, where ts and texh are the temperatures of the supply and exhaust, respectively.)
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Comparison of the computed mean tracer-gas (SF6) concentration distributions with the experimental data at different locations in the room (ce=(c−cs)/(ce−cs),ce=0 ppm, cs=0.42 ppm, where cs and ce are the tracer gas concentrations of the source and environment, respectively)

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