Transitory Analysis of Fluid Behaviour Inside Hollow Cone Sprinklers Using CFD

摘要

Hollow cone sprinklers are devices widely used in the industry to atomize liquids such like water in a gas such as air, to achieve a proper atomization process, the sprinkler efficiency must be as high as possible, otherwise it will be necessary to perform the processes again and the costs increase. A parameter for the measurement of efficiency of these devices is the aspersion distributed by volume of water, and this is achieved with the analysis of the fluid at constant pressures. This article presents the evaluation via CFD simulation of a hollow cone sprinkler WT400 in the CFX module of the Ansys Workbench V17.0 program. The evaluation analyses the performance of the sprinkler when there is a 29.7% change in the exit angle of the sprinkler hollow cone, compared to its initial configuration. Computational analysis of volume fraction, velocities in symmetry planes and flow lines are carried out; Experimentally, spray distribution of the configurations are evaluated.