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Master Thesis

Analyse de l'influence de paramètres géométriques et physiques sur le coefficient de décharge appliqué à la ventilation dans le bâtiment

Abstract : This experimental study uses an open jet wind tunnel and a scale model to investigate the influence of geometrical parameters (form factor and shape of the orifice, porosity) and physical parameters of the wind (wind speed, suction speed air, impact) on the discharge coefficient. This coefficient take into account the contraction of the streamlines during the passage of air through an orifice, it authorizes the use of the theoretical model by applying it to practice. But the use of a constant discharge coefficient value such as that given in the literature might be an invalid simplification. Having characterized the wind tunnel, the various assumptions made for the application of the orifice law will be discussed. Subsequently, the three theoretical models will be confronted to get the most accurate. In the end, getting a kind of hole with a coefficient of discharge is as independent as possible of the air flow will be the objective in analyzing the influence of parameters and knowing the critical configurations. This will allow more accurate modeling of flow through the openings of the building.
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https://dumas.ccsd.cnrs.fr/dumas-00633711
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Submitted on : Wednesday, October 19, 2011 - 11:14:53 AM
Last modification on : Sunday, April 5, 2020 - 7:25:09 PM
Long-term archiving on: : Friday, January 20, 2012 - 10:26:37 AM

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  • HAL Id : dumas-00633711, version 1

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Jean-Rémy Salliou. Analyse de l'influence de paramètres géométriques et physiques sur le coefficient de décharge appliqué à la ventilation dans le bâtiment. Mécanique des fluides [physics.class-ph]. 2011. ⟨dumas-00633711⟩

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