非牛顿流体在地层中的粘度是一个随剪切速率变化而改变的非常数,反映在不稳定压力响应特性上表现出与牛顿流大不相同的特征。
Non-Newtonian fluid viscosity in the formation of a shear rate of change with variable, stress response reflected in the instability shown by different characteristics of Newtonian flow.
阐述了广义牛顿流体模型形式简单、计算量低,在非牛顿流体搅拌流场数值模拟过程中应用广泛;
The generalized Newtonian fluid models are commonly adopted in the numerical simulation for non-Newtonian fluid for their advantages of simpleness in form and low computational complexity.
提出了关于变偏心度环空中计算非牛顿流体在层流、过渡流及紊流状态下压降、流速的方法;给出了流场特性分析及数值模拟结果。
The method is presented to simulate pressure losses and flow velocities in skewed narrow annular geometries for laminar, transition and turbulent non-Newtonian flow.
石油和化工中许多问题需要求解非牛顿流体偏心环空螺旋流。
Many problems in petroleum and chemical industry can be reduced to the solutions of the helical flow of Non-Newtonian fluid in eccentric annular space.
而弹性储容比和窜流系数的影响和普通三重介质相同,只是由于非牛顿流体的影响其“凹陷”的位置升高;外边界的影响也和牛顿流体的情况明显不同。
The storativity ratio and inter-porosity flow factor is just same as the newtonian fluid, and the effect of outer-boundary on transient pressure is different from that of newtonian fluid.
表皮系数和非牛顿流体幂律流指数对压力响应的影响有着明显的不同;
The effect of skin factor on transient was different from that of power index;
通过管中心和其它管线的速度变化趋势,以及圆管径向的速度分布,描述了流场的整体流动特性,揭示了非牛顿流体管道流的速度过冲和振荡现象。
They can easy show the behaviors of the flow in the whole cube, reveal the phenomenon of locity overshooting and damping oscillation of the flow.
通过管中心和其它管线的速度变化趋势,以及圆管径向的速度分布,描述了流场的整体流动特性,揭示了非牛顿流体管道流的速度过冲和振荡现象。
They can easy show the behaviors of the flow in the whole cube, reveal the phenomenon of locity overshooting and damping oscillation of the flow.
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