Parametric Study of Air Flow Shape in Saddleback Double-Cladding Ventilated Roof on Input Velocity

Abstract:

The study of air flow and its modelling is particularly focused on designing double-cladding roofs, which are recommended for buildings in wet conditions. Software ANSYS [, which uses CFD method, is used for the modelling. The primary issue concerning the design of ventilated double-cladding roofs is to select the optimum thickness of air cavity. The study shows that the shape of streamlines in the ventilated cavity of a double-cladding flat saddleback roof is not based on the input velocity. Based on the selected model, there is a blind spot in between 1.76 m and 4.23 m of the outer edge of the attic where air back flow occurs at the bottom surface of the upper roof deck which leads to poor ventilation of the ventilated cavity.

• Periodical: Advanced Materials Research (Volume 871)
• Pages: 45-49
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.871.45
• Online since: December 2013
• Authors: Tomáš Bartoš*, Jan Pěnčík
• Keywords: Air Flow Velocity, CFD Method, Double-Shell Roofs, Ventilated Cavity

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