Numerical Simulation of Three Dimensional Water Flow ThrougSpray Nozzle h

Abstract

A three dimensional numerical simulation of turbulent water flow through airwasher system nozzles of cylindrical junction with diameters of 2 mm, 3 mm, 4 mm, 5mm respectively and of centered diameter with 4 mm was achieved by using FLUENT software. kεmodel was used in this study. The entrance region of the model wasselected to ensure the constant velocity in the inlet gives results near real solution.Modeling includes the construction of a 3D model with the aid of AUTOCAD and GAMBIT. For the purpose of checking the applicability of the modeling and discovering the best location and diameter of cylindrical junction, five differentlocations and diameters of the cylindrical junction were selected. The present workshows that the best location and diameter are observed for the case of 4 mm. The flowsimulation was achieved by studying the velocity vector plot and contour plot ofpressure in different slices locations through each of 5 geometries. The results wereidentical to the physical phenomenon which was observed in the laboratory of fluidmechanics, where the velocities and pressures are zero at exit cylinder center whichmeans that there is no fluid at center of exit cylinder for 4mm case as shown in Fig(1).The results show also that the maximum skin friction occurs at the peripheralboundaries of the cylindrical junction and exit cylinder.

Keywords

AA