Validation of a Coupled Multizone and CFD Program for Building Airflow and Contaminant Transport Simulations
نویسندگان
چکیده
Current multizone airflow network models assume air momentum effects, contaminant concentrations and air temperatures are uniformly and homogeneously distributed in a zone of a building. These assumptions can cause errors for zones where air and/or contaminant are not well mixed. A coupled multizone-CFD program has been developed to improve the multizone model by applying a CFD model to those poorly-mixed zones and the multizone model to the rest zones. This paper validated the coupled multizone-CFD program by using experimental data obtained in a four-zone facility with non-uniform distributions of air momentum effects, contaminant concentrations, and air temperatures. The calculated results by the coupled program generally agreed with the experimental data although discrepancies exist in some cases. The coupled multizone and CFD simulations used less computing time than the CFD simulations for the whole flow domain.
منابع مشابه
On-Site Experimental Validation of a Coupled Multizone and CFD Model for Building Contaminant Transport Simulations
Previous studies indicated that the coupling of multizone and CFD (Computational Fluid Dynamics) models can provide a good compromise between the accuracy and required computation time. The results show that the coupled model predicts contaminant distribution more accurately than multizone model alone for the zones close to the contaminant source location. For all other zones, the multizone mod...
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