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Simulating the Rheology of Suspensions Using Dissipative Particle Dynamics

机译:使用耗散粒子动力学模拟悬浮液的流变学

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A new mesoscopic simulation method, dissipative particle dynamics (DPD), is applied to model suspensions. DPD is a coarse-graining technology, in which several atoms are united into a single simulation particle so that simulation is realized in a larger length scale and time scale. Now this method has been widely used in simulating the rheology of colloidal suspensions, and mainly focused on the equilibrium dynamics and the steady-state shear rheological behaviors for a range of suspensions volume fractions. It is shown that the diffusion coefficient of dispersion decreased, but the viscosity of suspension increased at a given shear rate with the increase of volume fractions of suspension particles;; the viscosity decreased with the increase of shear rate at the same volume fractions of suspensions.
机译:一种新的介绍仿真方法,耗散粒子动力学(DPD)应用于模型悬浮液。 DPD是一种粗晶的技术,其中几个原子在于单一模拟粒子,使得模拟以更大的长度和时间尺度实现。 现在这种方法已被广泛用于模拟胶体悬浮液的流变学,主要集中在一系列悬浮体积分数的平衡动力学和稳态剪切流变学行为。 结果表明,分散体的扩散系数降低,但悬浮液的粘度随着悬浮颗粒的体积分数的增加而增加; 随着相同体积分数的悬浮液的剪切速率的增加而降低了粘度。

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