【摘要】 由于非牛顿液体在工业中,特别是在石油开采工业中的日益广泛的应用,非牛顿流体力学已逐渐成为流体力学的一个重要分支。非牛顿液体具有复杂的流变特性。本文对粘性和粘弹性非牛顿液体的流变特性及其结构机理作了简要的介绍。本文阐述了以皂仁粉溶液等几种非牛顿液体在人造岩心中进行渗流试验的结果。由试验可知,溶液本身的浓度及岩心的渗透率等将对非牛顿液体在多孔介质中的流变特性产生重要的影响。本文还介绍了根据试验得到的上述非牛顿液体在线性及平面径向岩心模型中渗流时的压力分布规律。更多还原

【Abstract】 As non-Newtonian fluids have found more idea application in different kinds of industries,especially in the petroleum industry,flow of non-Newtonian fluids has g- radually grown to be an important branch of fluid mechanics. Since non-Newtonian fluids have complex rheologieal characteristics,in this paper, only a brief introduction of the theological character and mechanism of the viscous and viscoelastic non-Newtonian fluids has been given The results of the laboratory experiments on the flow of several non-Newtonian fluids,such as Zao-Ren powder fluid etc.,through artificial cores are presented in this paper From these experiments it can be observed that the concentration of these fluids and the permeability of core gave great influence on the rhelogical characterist- ics when non-Newtonian fluids flow through a porous medium.The pressure and its distribution in such a system were derived for the linear and radial cases in this pap- er.更多还原