Airflow Pattern and Performance Analysis of Diffuse Ceiling Ventilation in an Office Room using CFD Study

Publikation: Forskning - peer reviewKonferenceartikel i proceeding

Abstrakt

Diffuse ceiling ventilation uses perforations in the suspended ceiling to deliver air into the occupied zone. Due to the complex geometry of the diffuser, it is not possible to build an exact geometrical model in CFD simulation. Two numerical models are proposed in this study, one is a simplified geometrical model and the other is a porous media model. The numerical models are validated by the full-scale experimental studies in a climate chamber. The results indicate that porous media model performed better on predicting air flow characteristic below diffuse ceiling and air velocity near the floor. However, the simplified geometrical model shows superior performance on calculating the diffuse ceiling surface temperature.
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Detaljer

Diffuse ceiling ventilation uses perforations in the suspended ceiling to deliver air into the occupied zone. Due to the complex geometry of the diffuser, it is not possible to build an exact geometrical model in CFD simulation. Two numerical models are proposed in this study, one is a simplified geometrical model and the other is a porous media model. The numerical models are validated by the full-scale experimental studies in a climate chamber. The results indicate that porous media model performed better on predicting air flow characteristic below diffuse ceiling and air velocity near the floor. However, the simplified geometrical model shows superior performance on calculating the diffuse ceiling surface temperature.
OriginalsprogEngelsk
TitelProceedings of the 14th International Conference of the International Building Performance Simulation Association: IBPSA 2015 : Building Simulation 2015
Antal sider8
Udgivelses stedHyderabad
UdgiverThe International Building Performance Simulation Association Conference
Publikationsdato2015
Artikelnummerp2983
StatusUdgivet - 2015
Begivenhed - Hyderabad, Indien

Konference

Konference14th International Conference of the International Building Performance Simulation Association
Nummer14
LandIndien
ByHyderabad
Periode07/12/201509/12/2015

    Emneord

  • Ventilation, Office Room, Diffuse ceiling ventilation, Airflow pattern, CFD study
ID: 225531049