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arXiv 1003.1268cond-mat.soft
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干扰附近流场应力和波动的标度模型

Model for the Scaling of Stresses and Fluctuations in Flows near Jamming

Brian P. Tighe, Erik Woldhuis, Joris J. C. Remmers, Wim van Saarloos, Martin van Hecke

摘要:

我们探测流动的软,粘性球附近的干扰点,作为一个临界点静态软球。从能量的考虑,我们发现非平凡的速度波动与应变率的标度。结合这种缩放与干扰的见解,我们得出了一个分析模型,预测四个不同的流量制度,每个特征由有理值标度指数。政权的数量和指数的值都偏离了先前的结果。我们验证模型的预测与模拟。

英文摘要:

We probe flows of soft, viscous spheres near the jamming point, which acts as a critical point for static soft spheres. Starting from energy considerations, we find nontrivial scaling of velocity fluctuations with strain rate. Combining this scaling with insights from jamming, we arrive at an analytical model that predicts four distinct regimes of flow, each characterized by rational-valued scaling exponents. Both the number of regimes and values of the exponents depart from prior results. We validate predictions of the model with simulations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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