Results from a CFD reference study into the modelling of heat and smoke transport by different CFD-practitioners

The paper describes results from a reference study that focuses on the application of the Computational Fluid Dynamics (CFD-) technique for heat and smoke transport in practice. Goal of the study is to obtain insight into the amount and causes of the spread of CFD-results when applied by different users. In this study several CFD-practitioners have solved the same relatively well described flow problem. The obtained results have been compared. They show a clear spread which to some extent can be explained by the assumptions made for the modelling and solving of the problem. Participants adhering closest to proposed problem best practice obtain similar results, independent of the CFD code applied. Another conclusion is that a good overview of the model interpretations for the flow problem adds to the value of the results. However, than it is also important that those who need to assess the results can value this overview.