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Investigating Flow Patterns in Wind Catchers with underground Tunnels using Computational Fluid Dynamics

Author Affiliations

  • 1Department of civil engineering, Bandar Anzali Branch, Islamic Azad University, Bandar Anzali, IRAN
  • 2 Department of civil engineering, Roudbar Branch, Islamic Azad University, Roudbar, IRAN
  • 3 Department of Mechanical Engineering, Sharif University of Technology, Tehran, IRAN

Res. J. Recent Sci., Volume 1, Issue (11), Pages 64-69, November,2 (2012)


Taking the advantage of wind energy in ventilating residential places has been focused on since old times. Surely, using wind is important in making healthy and comfortable rooms for work and life, especially from the view point of enhancing the physical and mental performance of people and reducing consumption of non-renewing fuels. When wind flows around a building or enters from one side and then exits from the other side, natural ventilation occurs. Windscops can be used for pushing the air out to provide conditions to make a natural flow of air. Windtowers can be used for pulling the air inside and then let it flow freely in the room, So, A combination of windtowers and windscops could provide a natural flow through the area to be ventilated. A special kind of windtower can be used in a little distance from the building so that they guide air into underground channels into the building; used air after ventilating will exit through the windscop. In this paper, after describing how windtowers work, using CFD the performance of windtowers is investigated. For this aim at first geometrical model and meshing was performed in GAMBIT, then FLUENT was used to investigate the flow pattern in prescribed windtowers. Results of the analysis in form of flow pattern and velocity contours in X and Y direction are presented.


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