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Comparison of Numerical Simulation of NOx with Modeling of IAQX in Indoor Environments

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Author(s): Shafiepour Motlagh M. | Kalhor M. | Khalil Arya F.

Journal: Iranian Journal of Health and Environment
ISSN 2008-2029

Volume: 4;
Issue: 2;
Start page: 125;
Date: 2011;
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Keywords: Modeling | Indoor Environments | Fluent 6.3.26 | IAQX 1.0f

ABSTRACT
Background and Objectives: This study presents an evaluation between IAQX 1.0f and Fluent 6.3.26 in modeling of NOx dispersion in an indoor residential environment. Modeling predictions are compared with sampling results.Materials and Methods: Aresidential building with about 84 m2 area is modeled. In IAQX 1.0f the building is divided into five zones. Emission factors and absorption rate of sinks is estimated with US.EPA suggested factors. On the other hand, In the Fluent 6.3.26 model, the building was divided into 1777 cells, and the openings are defined by the boundary conditions of the inflow. In this model, pollution sources were simulated by boundary conditions of the mass inflow.Results:Compared to IAQX 1.0f, Fluent 6.3.26 showed higher estimation of the concentrations in the zones of 1, 2 and 3. In comparison with the measurements, both models had underestimated results.Conclusion: The results of Fluent 6.3.26 were closer to the sampling results in the zones.
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