Objective: This research examines the effect of the climatic organs of the surak and the daricheh in rural housing in Sistan and Baluchestan province. The emphasis of this research is on natural ventilation and its utilization in natural ventilation. The climatic organ in this research is the indigenous climatic elements that the architects of these regions have used as climatic solutions in the building.

Research Method: In this study, first, definitions, explanation of the concept of clamatic organ, wind calculation engineering, introduction of organs and spaces related to it, understanding of the village under study and the sample taken have been discussed. In the next step, quantitative analyses have been conducted with Ansys Fluent software to examine the function of these organs. The dependent variable is natural blinding and the independent variable is wind speed. Next, the relationship between the variables has been examined using computational fluid dynamics (CFD) analysis software, which ultimately led to the examination of the function of these organs and its comparison with field data.

Results: Based on the knowledge of the architectural elements of the rural area of ​​Sistan and Baluchestan province and considering the function of some of them that play the role of natural ventilation; by examining the results, it can be proven that climatic organs play a role in creating natural ventilation; also, the interaction of other architectural spaces with these organs is determined and in fact they function in a chain of creating natural ventilation. In this research, the focus was on the function of surak and daricheh in quantitative terms to examine their function with the wind speed index.

Conclusion: The analyses showed that other elements are effective in creating natural ventilation, and by eliminating any of them, the aforementioned process remains incomplete, and in this respect, these elements are referred to as climatic organs. By examining the direction of wind flow and the placement of climatic organs, we find that the thermal needs of the residents, the appearance of the village, the use of architectural and climatic elements, and such things are affected by the climatic conditions of the region; in such a way that the main direction of the houses is in the direction of the wind, which indicates the adaptation of rural housing in this area to climatic needs. In the analyses, the wind enters the room with a hole at a speed of 8 m/s from the north side, and its speed after entering the room reaches 10 m/s, and this value in the center of the room reaches 4 and at the exit reaches 2 m/s. In the room with a vent, the wind speed when entering the room is 10 m/s, and this value for the center of this room reaches 6 and when leaving the room reaches 2 m/s.