The three-dimensional (3D) flow pattern inside and around the cabinets was analyzed with the CFD program FLUENT 14.0 from ANSYS Inc. as described in FLUENT (2011). Steady state conditions were assumed for the flow calculations with the standard k– ε applied as the turbulence model. Continuity and the Reynolds-averaged, Navier–Stokes (RANS) formulation was used for the analysis. The turbulent eddy viscosity can be determined by applying the turbulence in the standard k–ε model,