Study on Rules for Spiral Groove of Swirl Nozzle to Performance of Inside Flow

摘要

With the advantages of convenient processing, easy control for geometry size and adjustable parameters, single head spiral groove nozzle is widely applied in the field of environmental protection equipment. According to the lackage of rules on structure parameters of spiral groove to spray performance and supply power, spiral slot geometric model was set up, and three dimension numerical analysis was carried on using k-ε predominate turbulence model by fluent. The rules of spiral slot length, spiral groove depth, and groove pitch to flow velocity increasing ratio and frictional pressure loss were acquired. It supplies a theoretical guidance and basis for design of spiral groove of swirl nozzle.