Experimental and numerical simulation of two Iranian badgirs in the Persian Gulf, City of Kong and Laft

Abstract

Iranian wind towers "Badgir" works thanks to natural driving forces, such as differences in temperature between a building and its environment. By evaporation, convection and natural air currents, we can manage the internal thermal comfort of the local interior environment. The air movement is carried out by the process of pressure and extraction. This paper focuses on sustainable structure, Badgir and the computer simulation, experimentation and reconstruction of a wind towers in the city of Kong located in the Persian Gulf. The construction material of this Badgir is stone and adobe (earth clay, straw and water). This natural material has high heat storage capacity and help to evacuate hot air. The aerodynamic aspects are examined numerically by using CFD (Computation Fluid Dynamics). The calculated velocity and pressure fields are compared to measurements taken on the model installed in a wind tunnel.