CFD analysis of flow and temperature fields in atrium with ceiling height of 130 m
- Univ. of Tokyo (Japan). Inst. of Industrial Science
Flow and temperature distributions in an atrium with a tall ceiling height (H = 130 m) are analyzed by means of computational fluid dynamics (CFD) and radiation simulation. The occupied region (the space near the floor) of the atrium, which is open to a large void space, is partially air conditioned. The effects of the flow and temperature fields of the void space on the occupied region are analyzed in detail. Then the effects of ventilation in the upper space of the atrium on the temperature distribution are examined. The analyzed void space, 130 m high, is sandwiched between two high-rise office buildings. The west and east sides are covered with glass walls, through which much solar heat is introduced into the void space. In summer, only the lowest portion of the atrium is well air-conditioned, and the rest of the space, especially the upper part, is heated by the sunshine and becomes hot. The atrium has open bridges at every floor to connect the two office buildings, so the flow and temperature around these bridges are greatly affected by the atrium air. The analysis includes solar radiation (shortwave) simulation, radiative heat transfer (infrared) simulation, heat conduction simulation, and airflow and temperature distribution analysis of the atrium space (CFD analysis). Ventilating the upper space effectively limits the temperature rise in the upper part of the atrium to within an acceptable level. The radiation and convection simulations clearly show the characteristics of the flow and temperature fields of the large-scale atrium.
- OSTI ID:
- 211871
- Report Number(s):
- CONF-950624--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Predicting air flow and thermal comfort in offices
Design of an atrium for a passive-solar retrofit of an office buildings