The report deals with 2-D numerical calculation of room airflow in
an isothermal annex 20 room. The report documents the ability of
the flow solver EllipSys2D to give results in good agreement with
measurements for the specified test case. The flow solver is a
finite volume code solving the Reynolds Averaged Navier Stokes
equations.Five two-equation turbulence models were tested. These
are the standard k-epsilon model, the low-Reynolds number k-epison
model by Launder & Sharma, the k-omega model by Wilcox, the
k-omega baseline (BSL) model by Menter and the k-omega Shear
Stress Transport (SST) model by Menter.Except from the k-omega SST
model by Menter, all the models lead to velocity distributions
that are in good agreement with measurements. The poor performance
of the k-omega SST model by Menter for the given flow can possibly
be explained from the limiter applied to the eddy
viscosity.Applying theory for a two-dimensional wall jet,
measurements are compared with calculated values of the turbulent
kinetic energy.

Publication status | Published - 2000 |
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