摘要翻译:
研究了压力驱动Stokes流动在填充分数为0.1<=phi<=0.64时通过随机排列的球体的壁面剪切速率分布P(γ)。对于致密填料,P(gamma)是单调的近似指数的。当phi->0.1时,P(gamma)产生了与孤立球体绕流相对应的附加结构,可以得到精确的结果。基于力平衡理论,给出了平均壁面剪切速率的一个简单表达式。
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英文标题:
《The wall shear rate distribution for flow in random sphere packings》
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作者:
Patrick B. Warren, Frantisek Stepanek
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Soft Condensed Matter 软凝聚态物质
分类描述:Membranes, polymers, liquid crystals, glasses, colloids, granular matter
膜,聚合物,液晶,玻璃,胶体,颗粒物质
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
The wall shear rate distribution P(gamma) is investigated for pressure-driven Stokes flow through random arrangements of spheres at packing fractions 0.1 <= phi <= 0.64. For dense packings, P(gamma) is monotonic and approximately exponential. As phi --> 0.1, P(gamma) picks up additional structure which corresponds to the flow around isolated spheres, for which an exact result can be obtained. A simple expression for the mean wall shear rate is presented, based on a force-balance argument.
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PDF链接:
https://arxiv.org/pdf/706.282