Guidelines for CFD modeling of atria

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:211881

Schild, P G; Tjelflaat, P O ^[1]; Aiulfi, D ^[2]

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1. Norwegian Inst. of Tech., Trondheim (Norway). Dept. of Refrigeration and Air Conditioning
2. Sorane SA, Lausanne (Switzerland)

This paper highlights the factors that should be considered when applying computational fluid dynamics (CFD) to atrium design, and gives practical recommendations on how to achieve accurate results. CFD is an ideal tool for indoor airflow prediction, and so can play an important role in energy-conscious heating, ventilating, and air-conditioning (HVAC) design. Solar radiation and heat loss or gain through the glazed envelope of an atrium have a major bearing on the quality of the indoor environment. The paper therefore focuses on these aspects of atrium modeling. This paper first reviews established CFD methods of relevance to atrium design, such as using CFD results to evaluate thermal comfort and ventilation efficiency, and modeling boundary conditions for flow and heat transfer. Further, new results are presented from the authors` investigations into different ways of modeling solar radiation, ways of defining boundary conditions for wall heat transfer, the effect of near-wall grid resolution, and the effect of including surface-to-surface radiation exchange. A CFD code with a conventional {kappa}-{var_epsilon} turbulence model was used in the study.

• OSTI ID: 211881
• Report Number(s): CONF-950624--
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AIR QUALITY
ATRIA
COMPUTERIZED SIMULATION
INDOOR AIR POLLUTION
SPACE HVAC SYSTEMS
THERMAL COMFORT