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Modélisation tridimensionnelle des transferts thermiques et aérauliques dans le bâtiment en environnement orienté objet

Abstract : This work consists in the description of the air flow and heat transfer in buildings, making use of a simplified tool: the zonal method. It is a 3D method based upon the partitioning into a small number of subzones, intermediate between one-node and CFD models. Mass and energy balances are written in each subvolume while the mass flow in the interfaces are calculated by power pressure laws. The modularity of the method makes it particularly suitable for an implementation in an object oriented environment. The SPARK environment, fit for the resolution of large nonlinear equations systems, is hence used. Results are validated by comparison with various experimental and numerical references. A sensitivity analysis is then performed to determine the appropriate empirical coefficients as well as the characteristics of an optimal mesh. The properties of the object oriented environment are taken advantage of by coupling the zonal method with a thermal comfort model, a conductive model (taking into account 3D effects) and a mass transport model. The simulation of the influence of a heat source yields results consistent with experimental data, in the whole domain studied. Last, the combined natural and forced convection case is treated by adding a model for kinetic energy conservation in the subzones, and the calculated mass flows tally with the CFD results.
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  • HAL Id : tel-00523621, version 1

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Etienne Wurtz. Modélisation tridimensionnelle des transferts thermiques et aérauliques dans le bâtiment en environnement orienté objet. Modélisation et simulation. Ecole Nationale des Ponts et Chaussées, 1995. Français. ⟨tel-00523621⟩

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