• 石油化工许多问题需要求解非牛顿偏心螺旋

    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.

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  • 表皮系数非牛顿流指数对压力响应影响有着明显的不同

    The effect of skin factor on transient was different from that of power index;

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  • 本文讨论了在情况下一类牛顿初边值问题整体存在唯一性

    In this paper, we prove the existence and uniqueness of global weak solution of non Newton Filtration equation with a kind of nonlinear boundary condition.

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  • 阐述广义牛顿模型形式简单、计算,在牛顿体搅拌数值模拟过程应用广泛

    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.

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  • 提出关于偏心空中计算牛顿过渡状态下压降、速的方法;给出了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.

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  • 牛顿地层中的粘度一个随剪切速率变化而改变常数,反映在不稳定压力响应特性上表现出牛顿不相同特征

    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.

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  • 通过管中心其它管线速度变化趋势,以及圆管径向的速度分布,描述整体动特性,揭示非牛顿流体管道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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  • 弹性储容比系数影响和普通三重介质相同只是由于牛顿影响其“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.

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  • 讨论具有一般形式扩散项、边界以及反应一维牛顿方程初边值问题整体存在性。

    The present paper studied the global existence of nonnegative solutions of one-dimensional Newtonian filtration equation with more general boundary fluxes term, reaction, diffusion and convection.

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  • 本文主要就全啮合同向螺杆挤出机捏合熔体全充满区的进行了全三维非牛顿等温模拟

    This thesis concentrates on simulation of Non-Newtonian isothermal flow in kneading block in closely intermeshing co-rotating twin screw extruders.

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  • 利用A NSYS有限元分析软件对啮合同向螺杆挤出机螺纹元件进行了三等温非牛顿模拟分析

    Three-dimensional flow simulations of the flight element in an intermeshing co-rotating twin screw extruder are performed by solving the Navier Stokes equations with a finite element package, ANSYS.

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  • 介绍了实验装置设计组成,利用实验装置对胜利原油牛顿特性进行了初步研究

    A pipe flow test apparatus, which is used to research the characteristics of non Newtonian fluids, was designed and constructed.

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  • 通过变行为研究证明尼龙1212熔体为假塑性牛顿求得活化能

    The rheological study indicates that Nylon 1212 melt shows a non ?Newton and pseudoplastic fluid and the viscous flow activation energy has also been obtained.

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  • 通过变行为研究证明尼龙1212熔体为假塑性牛顿求得活化能

    The rheological study indicates that Nylon 1212 melt shows a non ?Newton and pseudoplastic fluid and the viscous flow activation energy has also been obtained.

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