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  • Simulation | BADGIR, badguir, tour à vent, ventilation naturelle, architecture vernaculaire, architecture en terre, terre d’argile

    Construction of the Badgir in 1/2 scale The construction of this example was carried out in collaboration with the students of the Master of the National School of Architecture of Paris-Malaquais (ENSAPM). As part of the project on Bioclimatic, Adaptive and Passive Architectural Envelopes, the Grands Ateliers of the University of Lyon, GAIA, organized a workshop from April 20 to 24, 2015. The objective of this workshop was to combine the history of construction with practical experimentation and the current application of ancient implementation techniques. The students thus contributed to the implementation of pressure and air extraction measurements, as well as to the analysis of the results obtained following the tests carried out with different wind angles (0°, 15°, 30° and 45°).

  • ABOUT | BADGIRBadgir, badguir, tour à vent, ventilation naturelle, architecture vernaculaire, architecture en terre, terre d’argile

    Roland DEHGHAN KAMARAGI Focusing on vernacular architecture and the integration of natural energies in design, I emphasize the use of local techniques and materials for a sustainable and environmentally respectful design. CV

  • Enseignement-archi | BADGIRBadgir, badguir, tour à vent, ventilation naturelle, architecture vernaculaire, architecture en terre, terre d’argile

    Competence CFD (Computational Fluid Dynamics), RDM (Strength of Materials) COURS TD/TP Applications of computational fluid mechanics and the resistance of materials in architecture. ​ Establishment: ENSAPM (National School of Architecture of Paris-Malaquais) ​ Course : CFD (Computational Fluid Dynamics), RDM (Strength of Materials) ​ Course content : Realization of 2D and 3D simulations in fluid mechanics, including the construction of the mesh with Gambit, the resolution of the Navier-Stokes equations and the post-processing with Fluent. Thermal and aerodynamic analysis of the air ducts of a building constructed of earth and wood, including modeling and numerical simulation. Courses in Statics and RDM (Resistance of Materials) taught during the first year of the license. Building Thermal course taught during the second year of the license. Tutorials (TD): creation of conceptual models to experiment with structures, during the second year of the license. Directed work (TD): construction of models of complex structures such as hulls and membranes, during the third year of the license. ​ ​ ARCHITECTURE TEACHER

  • Simulation | BADGIR, badguir, tour à vent, ventilation naturelle, architecture vernaculaire, architecture en terre, terre d’argile

    Simulation of air flow in the Siraf Badgir: A Study on Mechanical Behavior Based on Opening Parameters. The study of opening parameters through finite element analysis was at the heart of our research. By applying this modeling method, we were able to accurately simulate how different openings influence the mechanical behavior of structures. The structure was modeled under Rhino, then the mesh obtained was exported to Gambit where the boundary conditions were applied before being finally imported into Fluent, the numerical simulation software used to simulate the behavior of the wind in the ducts. The model was modeled under Gambit in order to apply the boundary conditions to it. Simulation of the Badgir domain. Mesh subtraction. We carried out measurements by modifying the angle of incidence of the wind at 0°, 15°, 30° and 45°. The wind tunnel results for the angle at 0 degrees. The wind tunnel results for the 30 degree angle. Studying this image, we can see that when the angle is 0º, the extraction of air occurs almost uniformly in ducts B and D. In contrast, duct C, which is located in front of the air inlet A is in maximum depression. At an angle of 30°, we observe the presence of additional mechanisms. Part of the air is distributed in the room through the Badgir ventilation system, while the rest is directed to ducts B and C to be exhausted to the outside. The 32° angle remains the preferred angle for this experiment. In fact, when duct A is exposed to the prevailing wind at an angle of 32°, the other three ducts immediately go into extraction mode to efficiently evacuate the air.

  • Les Badgirs Perses, badguir, tour à vent, ventilation naturelle, architecture vernaculaire, architecture en terre, terre d’argile

    The Badgir is a wind tower which often has four conduits. The badgir is a natural cooling system that provides a fresh atmosphere throughout the day thanks to constant natural ventilation. This is how a Badgir works On entering the duct, the air experiences an increase in velocity due to the decrease in the cross-section of the duct. This increase in speed creates a low pressure zone inside the duct. The hot air inside the building, having a relative pressurent higher, is pushed out through the upper openings of the Badgir. The pressure difference between the inside and the outside of the building thus causes a continuous flow of air through the duct, creating natural ventilation. Natural cooling by day, gentle warmth by night ​ The Badgir works by using natural air circulation to cool the house on hot days and to warm it on cool nights. Play Video Share Whole Channel This Video Facebook Twitter Pinterest Tumblr Copy Link Embed Video Link Copied Search video... Now Playing 00:51 Play Video Now Playing 00:44 Play Video Now Playing 00:24 Play Video Now Playing 00:16 Play Video Question-Answer on Badgirs

  • Soufflerie | BADGIR, badguir, tour à vent, ventilation naturelle, architecture vernaculaire, architecture en terre, terre d’argile

    Several tests have been conducted on scale models of a Badgir La soufflerie de l'IUT de Ville d'Avray, Université Paris-Ouest. This model was designed specifically to be tested in the wind tunnel. Connection for pressure measurements. Final model Description of the wind tunnel The performances these from the wind tunnel 50m/s Test Area: 450*450*700 1% turbulence intensity Installation of pressure measurement and air extraction points along the ducts We drilled 140 holes evenly spaced along the ducts to allow pressure measurement and air extraction. Measuring device The yellow liquid makes it possible to visualize the reaction of a conduit to the prevailing wind. Diagram of the operation of the blower The mouth of the wind tunnel propels the wind at a speed of 20 m/s (chosen according to the resistance of the model). The pipes connected to the orifices transmit the pressure variations to the measuring devices. Wind direction tests at angles of 0°, 15°, 30° and 45°

  • Simulation | BADGIR, badguir, tour à vent, ventilation naturelle, architecture vernaculaire, architecture en terre, terre d’argile

    Regional analysis of Badgirs' behavior : Measurements and observations We conducted studies in various regions to observe and quantify the behavior of the Badgirs. Siraf's Badgir has been selected for wind tunnel experiments and CFD simulations ​ The choice of this Badgir was motivated by its exceptional aerodynamic performance. Equality of volume between the tower and the room: Symmetry, alignment and optimized ventilation ​ The equal length of the tower and the piece induces a relationship of symmetry and geometric alignment. This correspondence promotes spatial continuity and harmonious aesthetics. From a scientific point of view, this equality facilitates the balanced distribution of air flows, thus improving the efficiency of natural ventilation. Measure the speed and angle of arrival of the prevailing wind ​ Our analyzes were conducted under various experimental conditions, including various temperatures and different wind conditions. Taking these parameters into account made it possible to obtain more precise and representative results of the phenomena. men studied in various situations. Measurement of air volume in badgir ducts: installation of sensors and data analysis ​ We quantified air movement in terms of liters per second and cubic meters per hour using airflow sensors. This information allowed us to analyze and optimize the ventilation in the adjoining rooms. Measurements taken on site revealed that the speed of the airflow was reduced by about half in the surrounding rooms compared to its initial speed at the entrance. This observation helped us better understand airflow distribution and adjust duct design and placement to improve ventilation efficiency. Observe the behavior of the wind under the Badgir ​ The piece of cloth experiment illustrates the impact of air pressure on surrounding objects as well as the ability of air to move dynamically under the influence of different factors such as temperature and pressure. atmospheric. This is essential for understanding the behavior of air in structures such as Badgirs and for designing effective natural ventilation systems. Effect of Air Pressure on Objects in Ducts ​ The tissue drop experiment demonstrates the effect of air pressure in the ducts. Ducts A and B have positive pressure, which causes the tissue to descend. Ducts C and D have negative pressure, causing tissue to rise.

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