Coupling CFD and multizone models can avoid their respective drawbacks in predicting airflow andcontaminant concentrations distribution in buildings. Two kinds of boundary conditions are commonlyexchanged between them. The multizone model can give either pressure or mass flowrate boundaryconditions to CFD. This study analyzes in detail the impact of each of the boundary types on the CFDdomain, and compares them with a full CFD simulation without coupling.
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