چکیده:
This article addresses the analysis of the mechanism of natural air flow around the residential
buildings and the effect of the form of residential buildings on air flow among four building forms in Tehran. The aim of this research is to study the effect of the form of residential buildings on the mechanism of natural air flow with the purpose of optimally utilizing clean air. The research method is to use computer modeling and model analysis in the related software and conclusions have been achieved using comparison of outputs of the models produced. Accordingly, four samples were first selected from software forms and modeled in one commercial micro-climate simulator software. They were tested by entering Tehran climatic data and results were extracted as simulation images. Since the analysis was conducted in one hour interval in the morning of the 23rd of December
2013 among four selected forms. The results helped us to choose the optimal form among these cases. Thus, a general rule was not given regarding the case that the selected form is the best in all aspects. Research achievements indicate that building forms have a significant effect on local winds and air pollution reduction. Therefore, the general form of buildings affects the degree and type of pollution dispersion due to carbon dioxide and the retention effect of suspended particles.
خلاصه ماشینی:
"Air flow, Local winds, Residential Building Form, Pollution Dispersion, Retention of SuspendedParticles INTRODUCTION Considering the climate and environmental comfort is one of the old basic concepts in Iranian thoughts and its expression can be seen in the wisdom of Islamic architecture.
Research questions are then answered through examining the effect of form of residential complexes on air flow to analyze the wind behavior around the residential buildings and their public spaces in the selected domain located in Gheitarieh.
In order to extend the subject, the procedure of providing comfort inside the building and natural ventilation of indoor air should then be investigated in addition to the simulation of different samples of urban forms in climatic software to determine the optimal patterns and forms responsible to the wind in this scale so that a comprehensive form is achieved and provides comfort and inner natural ventilation to design their outer form appropriate to natural air stream (رجوع شود به تصویر صفحه) Table 2: Comparison of temperature, humidity, wind speed and its changed, wind direction and particle retention of the options (by author) (رجوع شود به تصویر صفحه) CONCLUSION The results of this study indicate that considering the wind direction, wind shadow, turbulence loop of the wind, Venturi effect and channelization phenomenon in residential building design can help more efficient design in the field of productivity in energy consumption and design "efficient energy architecture"."