稳流器对摇臂式喷头水力损失影响的数值模拟计算

稳流器是喷头内的主要过流部件,喷头内过流部件的压力损失是评价喷头好坏的指标。利用ANSYS/FLOTRAN有限元分析软件,根据喷头内部流体流态,激活标准K-ε湍流模型,对装有不同型式稳流器的PY130型喷头内部三维流场进行数值模拟。经过建模、分网、加载、计算这一流程,对喷头内流场进行微观化分析,得出速度矢量分布图和压力等值分布图,直观地反映了喷管内部流场紊流程度变化和压力变化并可得出喷头水力损失值,为喷头的优化设计提供合理的依据。

The Numerical Simulation Calculation to the Influence of the Water Power Losing of the Regulator to the Impact-drive Sprinkler Head

The regulator is major past component in the sprinkler head, the pressure losing of past component in the sprinkler head is index estimating sprinkler head .Using the ANSYS/FLOTRAN, According to the fluid flowing condition in the sprinkler head, activating standard K-~ swift current model, author make a numerical simulation to the inside three-dimensional flow fields of the model PY130 sprinkler head with the different model regulator. Through establishing model, separating net, loading and simulating the flow path, at the same time, author make macrocosmic analysis to flow field in the sprinkler head, then obtain velocity vector distribution diagram and pressure equivalent distribution diagram, which reflect directly the change of fluid turbulent degree and pressure of inner flow fields and obtain water power losing value of the sprinkler head, finally offer an in reason gist for the optimal design of sprinkler head.