CFD.

Previous studies on single-sided natural ventilation are mostly limited to very simple physical models, such as a single-room or single-storey building. Our recent on-site measurements have shown that previous empirical models based on such simple physical models are inapplicable to multi-storey buildings. In order to explore why, this study systematically compares the ventilation characteristics of single-storey and multi-storey buildings with single-sided natural ventilation.

The ventilation of underground car parks is important to avoid health problems associated with the inhalation of combustion products released by car engines, in particular carbon monoxide CO (which is commonly used as the indicator of car park indoor air quality). In recent years, a new mechanical ventilation system has appeared, based on the use of axial ventilators (jet fans) suspended under the car park ceiling. In this paper the flow generated by jet fans and their effects on pollutants are studied.

Wind catcher systems have been employed in buildings in the Middle East for many centuries and they are known by different names in different parts of the region. Recently there has been an increase in the application of this approach for natural ventilation and passive cooling in the UK and other countries.

This paper presents a study aimed at evaluating the effectiveness of natural ventilation strategies used in government dwellings in the Egyptian desert climatic design region. Three government housing blocks, built in the New Al-Minya city, were employed as case studies. Autodesk-Ecotect and FloVent CFD software were used to simulate the internal air movement and air temperatures. Theoretical analysis shows that there is considerable cooling potential by natural ventilation, with the thermal comfort potential being improved by up to 52% peak and 33.5% average.