A comparison of different turbulence models for a plane offset jet

In the ventilation and air conditioning of rooms, the air is usually discharged from a register. This air flow entering the room generally resembles an offset jet. Depending on the Reynolds number of the flow, the air conditioning and ventilation systems are classified as either mixing or displacement type. CFD codes have been widely used for the prediction of velocity field in both mixing and displacement systems. However, there are numerous discrepancies between numerical results and experiments. The main objective of the present study is to examine the capability of different turbulence models (i.e. k-ε, RNG k-ε and Reynolds stress) to predict the velocity field of an offset jet. The computed results are compared with the bias free data obtained using two-component Laser Doppler Anemometry (LDA).