నైరూప్య

NUMERICAL PREDICTION OF AIR FLOW THROUGH PERFORATED PLATES ON FLAT SURFACE

Pruthviraj U, Subhash C Yaragal, M K Nagaraj

A turbulent two dimensional flow behind perforated plate is numerically simulated and compared with the results of wind tunnel experiments from literature [1]. Realizable k-ε of the Fluent software is tested for the normal plates of porosities 0%, 10%, 20%, 30%, 40% and 50%, using which mean velocity, surface mean pressure and reattachment lengths were predicted inorder to study the fluid interaction and the size and shape of the bubble. Realizable k-ε turbulent model, which is an eddy-viscosity turbulence model, performed reasonably well for the thin perforated plate under study. For perforation greater than 30%, the simulation showed that the bubble is completely swept out as proved by the experiment.