摘要:The housing complex in the Passive Town Kurobe model was designed for residents to enjoy an environmentally-friendly lifestyle, and cross-ventilation was used to improve indoor thermal environment in hot seasons. To understand and maximize environmental improvements through cross-ventilation, computational fluid dynamics (CFD) simulations and measurements were carried out. It was confirmed that CFD simulation using the modified k-å model reproduced the observations with sufficient accuracy. The turbulence model used in the CFD simulations in this study was the standard k-å model, which incorporates the Durbin limiter. This model had the most accurate correspondence with the measured values. The wind catcher (WC) used to increase the cross-ventilation flow rate was found to be ineffective in the dominant wind direction. Further, it was found that if the room targeted for environmental improvement was on the upstream/downstream side, the flow rate was maximized if all windows in the room were opened.
其他摘要:The housing complex in the Passive Town Kurobe model was designed for residents to enjoy an environmentally-friendly lifestyle, and cross-ventilation was used to improve indoor thermal environment in hot seasons. To understand and maximize environmental improvements through cross-ventilation, computational fluid dynamics (CFD) simulations and measurements were carried out. It was confirmed that CFD simulation using the modified k-å model reproduced the observations with sufficient accuracy. The turbulence model used in the CFD simulations in this study was the standard k-å model, which incorporates the Durbin limiter. This model had the most accurate correspondence with the measured values. The wind catcher (WC) used to increase the cross-ventilation flow rate was found to be ineffective in the dominant wind direction. Further, it was found that if the room targeted for environmental improvement was on the upstream/downstream side, the flow rate was maximized if all windows in the room were opened.