Study on Vernacular Architecture Patterns to Improve Natural Ventilation Estimating in Humid Subtropical Climate

Wind ventilation is an efficient design strategy for the natural cooling system (NCS) in humid climates. The building forms can generate different pressures and temperatures to induce natural ventilation. This study has been carried out in Rasht city, Iran in 2017. The method was performed using a computational fluid dynamic (CFD) approach simulation to study variance between the proposed and the actual results of a design. The goal of the study is to assist architects to design optimum building form for natural ventilation. Hence, the purpose of this study was to investigate the effect of the form on natural ventilation. On this basis, wind flow simulation was performed using Design Builder Version 4.5. In this paper, the present usage of natural ventilation of rural residential buildings in Rasht area the application of this methodology. Initially, wind simulation was carried out based on actual building specifications. Then the proposed L-shaped extension was added to the building. The results showed that if the rectangular form is turned into an L shape, it can offer a better flow pattern for wind in all rooms, but the speed will be reduced

Impact of Climate Change on Green Roof Energy Performance in Oceanic Climates: A Simulation Dataset (2022-2050)

This dataset comprises two distinct components. The first section encompasses climate data adapted for climate change scenarios derived from the HadCM3 GCM A2 ensemble dataset. It includes essential variables such as Dry Bulb Temperature (DBT), Dew Point Temperature (DPT), Relative Humidity (RH), Atmospheric Pressure, Extraterrestrial Horizontal Radiation (ExtHoRad), Extraterrestrial Direct Radiation (ExtDiRad), Horizontal Infrared Radiation (HoInfRad), Global Horizontal Radiation (GlHoRad), Direct Normal Radiation (DirNoRad), Diffuse Horizontal Radiation (DifHoRad), Global Horizontal Illuminance (GlHoIll), Direct Normal Illuminance (DirNoIll), Diffuse Horizontal Illuminance (DifHoIll), Zenithal Luminance (ZenLum), Wind Direction (WindDir), Wind Speed (WindSp), Total Sky Cover (TotSkyCo), Opaque Sky Cover (OpSkyCo), Visibility (Visibili), Ceiling Height (Ceiling), Precipitable Water Overhead (PWO), Precipitable Water Column (PWC), Precipitation (Prec), Aerosol Optical Depth (AerOptD), Snow Depth (SnowD), and the Date of the Last Snowfall (LastSnow). These datasets are presented in Excel, including raw data, line charts, and boxplots. The second part of the dataset presents the results of simulations assessing the thermal performance of green roofs under two scenarios: the present scenario in 2022 and a future climate change projection for 2050. These simulations were conducted using the Design Builder software. This dataset is also provided in Excel format, featuring raw data, line charts, and boxplots. It compares conventional bare roofs and green roofs in distinct climate areas, specifically Auckland, Christchurch, and Wellington. This dataset's primary focus is on the year 2050, providing valuable insights into how climate change is expected to impact the energy performance of green roofs within oceanic climates.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Factors affecting creativity in the architectural education process based on computer-aided design

One of the most influential factors in architectural design is creativity. The enhancement of student creativity is a universally sought objective. This research hypothesized that computer-aided design, experience, sketching, physical modeling, learning environment, and images and visual references can serve as powerful tools to stimulate creativity in the architectural design process. It sought to investigate which of these components has the greatest impact on increasing student creativity. A total of 114 bachelor students and 347 master students of Architecture were surveyed using a questionnaire. Data were then analyzed using SPSS and one sample t-test and Friedman test for ranking. Results showed that experience can significantly increase the creativity of students in the architectural design process compared to the other components

Large-Eddy Simulation (LES) on the Square and Triangular Tall Buildings to Measure Drag Force

The wind load issues play a significant role in designing tall buildings, which has sometimes been considered an even more essential factor than earthquake loads. Also, investigating wind behavior in tall buildings is a crucial issue in architectural and structural design. A primary concern of wind engineering and aerodynamics is drag force. Drag force refers to a solid object’s behavior in the relative wind flow velocity direction in terms of fluid dynamics. The investigation involved only drag forces. The Autodesk Flow Design 2014 software was utilized as a wind tunnel simulator. The Large Eddy Simulation (LES) method was used for turbulence solving. This study aims to optimize tall square and triangular-shaped buildings in order to reduce drag force under along-wind motion. For this purpose, architectural aerodynamic strategies such as chamfered, rounded, and recessed corners were applied as aerodynamic modifications. Moreover, aerodynamic forms, including tapering and setting back on shapes, were applied on 24 building models. Generally, the height (H) and breadth (b) ratios were set to H: 200 m, which is equivalent to almost 60 stories, and b: 25 m wide. The obtained results indicate that model S5 (with a square floor plan) achieved 0.65 CD, and the t1 (with a triangular floor plan) achieved 0.30 CD, which could provide the best building model to reduce drag force. In this regard, the s1 could perform over 50% better in reducing wind load. Concerning the aerodynamic modification performance, the simulation results indicate that these modifications were able to lead to over 50% better performance in reducing wind force in square samples compared to triangular samples

Proposing Alternative Solutions to Enhance Natural Ventilation Rates in Residential Buildings in the Cfa Climate Zone of Rasht

Today, renewable resources and the crucial role of passive strategies in energy efficiency in the building sector toward the sustainable development goals are more indispensable than ever. Natural ventilation has traditionally been considered as one of the most fundamental techniques to decrease energy usage by building dwellers and designers. The main purpose of the present study is to enhance the natural ventilation rates in an existing six-story residential building situated in the humid climate of Rasht during the summertime. On this basis, two types of ventilation systems, the Double-Skin Facade Twin Face System (DSF-TFS) and Single-Sided Wind Tower (SSWT), were simulated through DesignBuilder version 4.5. Then, two types of additional ventilation systems were proposed in order to accelerate the airflow, including four-sided as well as multi-opening wind towers. The wind foldable directions were at about 45 degrees (northwest to southeast). The simulation results show that SSWT could have a better performance than the aforementioned systems by about 38%. Therefore, the multi-opening system was able to enhance the ventilation rate by approximately 10% during the summertime

Proposing Alternative Solutions to Enhance Natural Ventilation Rates in Residential Buildings in the Cfa Climate Zone of Rasht

Today, renewable resources and the crucial role of passive strategies in energy efficiency in the building sector toward the sustainable development goals are more indispensable than ever. Natural ventilation has traditionally been considered as one of the most fundamental techniques to decrease energy usage by building dwellers and designers. The main purpose of the present study is to enhance the natural ventilation rates in an existing six-story residential building situated in the humid climate of Rasht during the summertime. On this basis, two types of ventilation systems, the Double-Skin Facade Twin Face System (DSF-TFS) and Single-Sided Wind Tower (SSWT), were simulated through DesignBuilder version 4.5. Then, two types of additional ventilation systems were proposed in order to accelerate the airflow, including four-sided as well as multi-opening wind towers. The wind foldable directions were at about 45 degrees (northwest to southeast). The simulation results show that SSWT could have a better performance than the aforementioned systems by about 38%. Therefore, the multi-opening system was able to enhance the ventilation rate by approximately 10% during the summertime