Sürdürülebilir Yeşil Kampüs Koleksiyonu / Sustainable Green Campus Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7755
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Doctoral Thesis Non-Visual Aspects of Spatial Knowledge: Wayfinding Behavior of Visually Impaired People in Complex Urban Environments(İzmir Institute of Technology, 2016) Kan Kılıç, Didem; Doğan, Fehmi; Doğan, Fehmi; 02.02. Department of Architecture; 02. Faculty of Architecture; 01. Izmir Institute of TechnologyEverybody perceive space multi-dimensionally however blind people are more conscientious of the non-visual constituents of space. Although there is an extensive amount of research on mobility, perception, and way-finding of blind people, there has been fewer work to show which specific aspects of built environment they focus on and they use as cues in the way they relate to their urban environment. Therefore, this study focuses on the senses of blind individuals during their way-finding process in urban contexts. Two case studies in İzmir, Turkey and Lisbon, Portugal were conducted in large-scale urban contexts. The case study in İzmir highlights the holistic and multi-dimensional perception of space by asking 9 congenitally blind participants to mark those places that they find particularly important in Kemeralti and İzmir Fair Park by verbally describing the features in the environment they attend to. It was found that auditory information was the most used environmental cues and a feeling of enclosure is the most important environmental feature during way-finding. The second case study in Lisbon was conducted with 5 congenitally blind participants to understand the strategies of congenitally blind participants with a focus on whether sounds from the environment are of primary importance for blind individuals. The most important finding is that increased familiarity with the environment, the better way-finding strategies blind individuals have. This study highlights multi-dimensional sensory experience of urban environments and non-visual aspects of spatial perception.Doctoral Thesis Experimental and Numerical Analysis of Flow and Heat Transfer in Double Skin Facade Cavities(İzmir Institute of Technology, 2016) İnan, Tuğba; Başaran, Tahsin; Başaran, Tahsin; 02.02. Department of Architecture; 02. Faculty of Architecture; 01. Izmir Institute of TechnologyIn this study, airflow and heat transfer in a double skin facade (DSF) cavity were examined numerically and experimentally under natural and forced flow conditions. An experimental setup was constructed i the laboratory environment. Experiments were performed for two different DSF's airflow modes; buffer zone and external air channel. These experiments vere conducted with and without a solarsimulator integratrd t the system. Furthermore, the effect of pressure drop elements in the cavity of DSF were analyzed experimentally. After the numerical results (CFD and nodal network) were verified with experimental measurements, dimensionless heat transfer correlations were developed for the natural and forced convections. As a result, an extensive experimental data set was obtained for different working conditions of DSF. So, the dimensionless pressure loss coefficients were calculated experimentally based on the geometric configuration of the pressure drop elements in the cavity. In natural convection, with Rayleigh numbers ranging from 8.59*109 to 1.41*1010 and the increasing tendency of the average Nusselt numbers from 142.6 to 168.8 were shown. A correlation for a cavity characteristic length of 0.116 was constructed to evaluate the heat flux. In forced convection, another dimensionless correlations weredeveloped to predict the heat transfer by using. Nusselt numbers with in the Reynolds numbers ranging from 28000 to 56000 for a DSF with an external airflow mode. These correlations could be used for different characteristic length ranged betwen 0.1 and 0.16. These correlations were used for the energy performence of DSF applications for different directions and climatic zones in Turkey and compared with the single skin facede.Doctoral Thesis Effect of Urban Geometry on Pedestrian Level Wind Velocity(İzmir Institute of Technology, 2011) Yücel, Şebnem; Yücel, Şebnem; 02.02. Department of Architecture; 02. Faculty of Architecture; 01. Izmir Institute of TechnologyIn the recent years there are many studies on the detection of the Urban Heat Island (UHI) Effect which shows itself mostly by the temperature difference between rural and urban areas. The heat generation in the city, the radiant energy balance, the air flow direction and intensity are the main factors affecting the UHI. Height and shape of the buildings, the street width and orientation, the space between the buildings and the urban topography and vegetation are the main elements of the urban geometry. The air velocity is either increased or decreased by building blocks and the solar energy is trapped in the urban canyons formed by buildings on both sides of the streets. Pedestrian comfort level is greatly affected by the temperature, the relative humidity and the wind speed in urban canyons. The city of Izmir has been experiencing very hot summers especially in the recent years due to the UHI effect and the global warming. The compact organization of the streets in the mild climate of Izmir during the winter protects pedestrians and building façades from cold winds. However the prevailing wind and the local breeze in the summer season on the coastal region in Izmir are blocked by the buildings as well, causing discomfort during the hot summer days. Although this is a well known problem in Izmir, there are very few scientific studies on the subject to bring it above a speculative level. The aim of this study is to fill this gap as much as possible and find a way to create guidelines for planners and architects for future plans or physical organisation of the city and making strategies for better urban environment and comfort conditions for the citizens of Izmir.