The trailing vortex induced by a 4/45° ptd was modelled using Fluent 5 CFD software. A dense grid, locally refined with hanging nodes was used in the impeller swept area. The standard and Shih k-e models as well as the Reynolds stress model (RSM) with near-wall calculation were tested. The standard k-e model predicted the tip vortex and the main flow quite well, only damping the vortex too early. The Shih k-e model improved the prediction of vortex extend and rotation, but failed to predict k correctly in the rotating coordinate zone of the multiple reference frame grid. The RSM predicted the strongest vortex, but underpredicted k in bulk region of the tank.
|Publisher||VTT Technical Research Centre of Finland|
|Publication status||Published - 2000|
|MoE publication type||D4 Published development or research report or study|
|Series||VTT Energy Reports|
- stirred tank
- trailing vortex
Syrjänen, J. (2000). Standard k- model, SHIH k- model and RSM predictions of trailing vortex induced by a 45o pitched blade turbine. VTT Technical Research Centre of Finland. VTT Energy Reports, No. 23/2000