Publication de 6 numéros par an
ISSN Imprimer: 2152-5102
ISSN En ligne: 2152-5110
Indexed in
Numerical Investigation of Mechanical Tabs Effect on a Turbulent Free Circular Jet
RÉSUMÉ
Numerical simulation of low Reynolds turbulent free jet issuing from circular nozzles with and without tabs, using the Shear Stress Transport (SST) k−ω model has been carried out. First, the numerical model validation has been performed by comparing computed results with Particle Image Velocimetry (PIV) measurements for the circular nozzle without tabs. The obtained results show reasonable agreement, principally for parameters such as centerline longitudinal velocity, longitudinal fluctuating velocity, and volumetric flow rate. Secondly, the tested numerical model has been applied for tabbed jet and results were compared with those of the circular jet without tabs. It is showed that the turbulent jet flow is modified by the presence of tabs. Also, it is found that the circular jet with tabs has better mixing performance compared to the circular jet without tabs. With these results, the tested numerical model can be considered as an efficient and costless mean for optimizing circular nozzle geometry for Heating Ventilation Air Conditioning (HVAC) applications.