Lars Køllgaard Voigt
Year:
2005
Bibliographic info:
Building Simulation, 2005, Montreal, Canada, 8 p

Computational Fluid Dynamics (CFD) has evolved from an academic tool to an important commercial design tool over the past decades. In the present paper the accuracy of two equation turbulence models for 3-D internal air flows is investigated in terms of mean quantities and topological aspects. Results for pseudo 2-D and full 3-D simulations using the k-ε model and the Baseline (BSL) k-ω model of Menter, respectively, are compared with LDA measurements (Nielsen, 1990) and PIV measurements (Pedersen & Meyer, 2002). In order to explain similarities and differences between simulation and experiments, a topological apparatus is outlined. The main conclusion of this work is that the BSL k-ω model of Menter is superior to the k-ε model when flow structures are to be predicted.