Numerical simulation for corrugation and annular flow field of a stratification injection allocator 分层配注器波纹环空流场的数值模拟
When the shaker is working , its roller screen not only vibrates with the shaker deck , but also slowly rotates with the axis of itself , and the drilling fluids returned from annular space are separated inside the roller screen 工作时筛网筒与筛箱一起振动，同时还绕自身轴线作缓慢的旋转运动，从环空返回的钻井液进入筛筒内部进行分离。
In order to study the stability of non - newtonian fluid and its flow pattern discrimination method , the integral stability theory and local stability theory are applied to the concentric annulus flowing of plastic fluid and power - law fluid , then a relevant stability parameter expression of discriminating flow pattern is derived and set up in the paper 摘要针对非牛顿流体的稳定性问题及其流态判别的研究，将整体稳定性理论及局部稳定性理论应用于塑性流体和幂律流体在同心环空的流动中，建立和推导出相对应的判别流动状态的稳定性参数表达式。
