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首页> 外文期刊>ACS Macro Letters >Vorticity Deformation in Polymeric Emulsions Induced by Anisotropic Ellipsoids
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Vorticity Deformation in Polymeric Emulsions Induced by Anisotropic Ellipsoids

机译:各向异性椭球在聚合物乳液中引起的涡流变形

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摘要

We study the influence of particle shape on shear induced droplet deformation in polymeric emulsions. During shearing, droplets become elongated and rotate periodically about their major axes while aligning along the vorticity direction in ellipsoid-filled emulsions, while similar behavior is not observed in the pristine, microsphere-filled or ellipsoid-filled inverse systems. Based on the Jeffery orbit theory, the formation of anisotropic droplets with extremely small Reynolds number due to arrested coalescence in Newtonian matrix and strong confinement effect are suggested to be responsible for the vorticity alignment of droplets during slow shearing.
机译:我们研究了颗粒形状对聚合物乳液剪切剪切液滴变形的影响。在剪切过程中,液滴在椭圆形填充的乳状液中沿着涡度方向排列时会变长并绕其主轴线周期性旋转,而在原始的,微球填充的或椭圆形填充的逆系统中未观察到类似的行为。基于杰弗里轨道理论,认为由于牛顿矩阵中的聚结滞留和强烈的约束作用,形成了具有极小的雷诺数的各向异性液滴,这是液滴缓慢剪切过程中涡旋取向的原因。

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