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Theses

Panache développé au-dessus d'une source thermique : stratification du milieu environnant en enceinte ventilée

Abstract : Within the industrial framework of displacement ventilation, the report presents the experimental study of the development of a thermal plume in a confined ventilated surrounding. The experiments were carried out using in an aeraulic test room (4,8x4,2x5,6m3) by thermocouple probes. The used heat source is a 1,54m-diameter disc, heated at 200°C. The qualification of the test facility makes it possible to know the optimal operation parameters and to evaluate the relative budget of convective and radiative exchanges in the chamber. For high supply flow rates, the plume is compatible with that developed in infinite medium. The simultaneous use of 16 thermocouples makes it possible to characterize the thermal structures which are present in the plume. For lower supply flow rates, a temperature stratification appears in the chamber. Its interface has a considerable thickness and its position is at the height which corresponds to the maximum of the temperature fluctuations standard deviations. The evolution of the interface position is studied for various experimental conditions. In the light of the experimental results, it possible to consolidate laws already obtained in zones close and remote of the source. They also result in proposing a law of transition between these two zones.
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Theses
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http://docnum.univ-lorraine.fr/prive/SCD_T_2004_0012_BOUZINAOUI.pdf
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https://hal.univ-lorraine.fr/tel-01746798
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Submitted on : Thursday, March 29, 2018 - 10:45:03 AM
Last modification on : Monday, March 29, 2021 - 4:03:09 PM

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  • HAL Id : tel-01746798, version 1

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Abdelhakim Bouzinaoui. Panache développé au-dessus d'une source thermique : stratification du milieu environnant en enceinte ventilée. Autre. Université Henri Poincaré - Nancy 1, 2004. Français. ⟨NNT : 2004NAN10012⟩. ⟨tel-01746798⟩

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