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Review Article

Sub-zonal computational fluid dynamics in an object-oriented modelling framework

Marco Bonvini1(), Mirza Popovac2, Alberto Leva3
Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94704, USA
Austrian Institute of Technology, Energy Department, Giefinggasse 2, 1210 Vienna, Austria
Dipartimento di Elettronica Informazione e Bioingegneria, Politecnico di Milano, Via Ponzio 34/5, 20133 Milano, Italy
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Abstract

Airflow modelling is of fundamental importance for evaluating ventilation performance and energy consumption in buildings, and various approaches to the problem—starting from purely empirical up to the CFD ones—have been proposed and evaluated in the past years. Moreover, since the ultimate goal is whole building modelling, airflow simulation needs coupling with Energy Simulation (ES), in order to assess the overall energy performance. Due to the substantial differences between the software employed for airflow and ES, co-simulation is very often felt as the only way to handle such a problem. For example, in recent years a lot of effort has been spent in to couple ES and CFD tools. This paper proposes an alternative, in the form of an approach for solving the Navier-Stokes equations in a general multi-domain modelling framework. Since co-simulation is not involved, the correctness of the numerical solution relies on a single solver, thus being really transparent to the analyst. This is a first step towards a whole building simulation tool embedded in a unique framework capable of performing energy analysis, computing airflows, and representing control systems.

Keywords

computational fluid dynamicsobject-oriented modelingairflow simulationbuilding simulationModelica

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Building Simulation
Volume 7 Issue 5,
October 2014
Pages 439-454
DOI: 10.1007/s12273-014-0175-6
Cite this article:
Bonvini M, Popovac M, Leva A. Sub-zonal computational fluid dynamics in an object-oriented modelling framework. Building Simulation, 2014, 7(5): 439-454. https://doi.org/10.1007/s12273-014-0175-6
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