الهه حبيب نيا

The increase in urbanization and the development of dense constructions in recent decades has led to the occurrence of serious environmental problems, including the reduction of air quality, increase in pollution and the creation of heat islands. Currently, one of the main problems of cities is air pollution, which is due to inappropriate morphological characteristics in cities, such as the increase of dense and high-rise constructions, the lack of consideration of green and open spaces around buildings, and the lack of arrangement of building blocks and street corridors according to the direction of the wind. And as a result of the blocking of wind paths and air flow, it has caused an increase in air pollution and a decrease in the quality of life in cities. A brief description of the current conditions in the metropolis of Tehran shows the greatest intensity of heat, air pollution and the formation of thermal islands in the core of this city, which have tangible effects on the urban environment and people's lives; Therefore, it is necessary to investigate and eva‎luate the natural ventilation and movement of the wind flow according to the urban morphology. In this regard, this research was adopted with the objectives of identifying and extracting the components and indicators of facilitating natural ventilation at the local scale, measuring and analyzing the effect of urban morphology on natural ventilation and presenting an urban morphology model to facilitate natural ventilation in the localities of Nawab region. This research is comparative in terms of approach and is in the category of applied research in terms of purpose. In this research, identification and extraction of the components and indicators of facilitating natural ventilation in the general sense in the world were compiled with the benefit of reliable domestic and foreign sources and documents. In order to achieve the goals of the research, 5 factors and 16 special indicators effective on morphological natural ventilation with the help of F`ANP model to prioritize the selected indicators and by combining it with geographical weighted regression (GWR), to investigate the extent and direction of the influence of indicators with speed Wind and as a result the natural ventilation efficiency of each block was used based on morphological factors and indicators. The results of this research show that by optimizing the urban design based on these indicators, it is possible to improve the natural ventilation conditions in the dense neighborhoods and as a result reduce the intensity of air pollution and urban heat. The proposed model of this research helps urban planners and designers to strengthen wind flow paths and facilitate natural ventilation through the optimization of urban layout. This can improve the quality of life in urban areas and reduce negative environmental effects.

،تهويه طبيعي , مورفولوژي شهري , رگرسيون وزن‌دار جغرافيايي (GWR) , F`ANP , محلات محدوده نواب تهران

Natural ventilation , urban morphology , geographically weighted (GWR) , F`ANP , neighborhoods of Nawab Tehran

elahe habibniya

Dr.Ahmad khalili