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为了研究气动系统中节流管的特性和计算节流管内部及尾部射流区的粘性流场 ,利用SIMPLE算法对两端带有节流口的管路粘性流场进行了数值计算 ,根据管路的几何形状和流动特点 ,对计算区域共划分了 5个区 ,并给出了相应的分区算法和各种边界条件的处理方法 ,通过计算得到节流管内各项参数。计算结果表明这种算法不仅可以计算出管路内部的流场 ,而且可以计算出管路尾部射流区的流场 ,并可以较好地描述通量的守恒性 ,
In order to study the characteristics of throttle tube in pneumatic system and calculate the viscous flow field in the inner and the rear jet area of throttling pipe, the viscous flow field in the pipeline with throttles at both ends was calculated by SIMPLE algorithm. According to the pipeline The geometric shape and the flow characteristics of the flow field. The calculation area is divided into 5 zones in total, and the corresponding partitioning algorithms and the treatment methods of various boundary conditions are given. The parameters of the throttling pipe are calculated. The calculation results show that this algorithm not only can calculate the flow field inside the pipeline, but also can calculate the flow field in the jet region of the tail of the pipeline and can better describe the conservation of flux,