Objective: This research examines the effect of the surak and daricheh climatic organs on rural housing in the Sistan and Baluchestan province. The emphasis of this research is on natural ventilation and how it is utilised. The climatic organs examined in this research are the indigenous climatic elements used by architects in these regions as solutions in building design.
method: First, this study discusses the definitions and explanations of the concept of climatic organs, wind calculation engineering, and the introduction of organs and related spaces. It also provides an understanding of the village under study and the sample taken. Next, quantitative analyses were conducted using Ansys Fluent software to examine the function of these organs. The dependent variable is natural shading and the independent variable is wind speed. Finally, computational fluid dynamics (CFD) analysis software was used to examine the relationship between the variables, which ultimately led to an examination of the function of these organs and a comparison with field data.
Results: Based on knowledge of the architectural elements in rural areas of the Sistan and Baluchestan province, and considering the function of some elements in providing natural ventilation, it can be proven that climatic organs play a role in creating natural ventilation. Also, the interaction between these organs and other architectural spaces has been determined, and they are found to function together to create natural ventilation. This research focused on the quantitative analysis of surak and daricheh to examine their function in relation to the wind speed index.
Conclusion: The analyses showed that other elements are effective in creating natural ventilation. By eliminating any of these elements, the aforementioned process remains incomplete. In this respect, they are referred to as 'climatic organs'. Examining the direction of wind flow and the placement of these organs reveals that the thermal needs of residents, the appearance of the village and the use of architectural and climatic elements are affected by the region's climatic conditions. This is evident in the main direction of houses, which face the wind, indicating the adaptation of rural housing in this area to climatic needs. In the analyses, the wind enters the room through a hole on the north side at a speed of 8 m/s, reaching 10 m/s inside the room. This value is 4 m/s in the centre of the room and 2 m/s at the exit. In a room with a vent, the wind enters at 10 m/s and reaches a value of 6 m/s in the centre of the room, before exiting at 2 m/s.