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arXiv 1509.01282physics.flu-dyncond-mat.softphysics.class-ph
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viscous fluid中的接触网

Catenaries in viscous fluid

Brato Chakrabarti, J. A. Hanna

摘要:

这项工作探讨了一个简单的模型,细长的,灵活的结构,在均匀的流动,提供分析解决方案的平移,轴向流动平衡的字符串受到均匀的体力和阻力线性的速度。将经典悬链线推广到五参数曲线族。第六个参数影响曲线中的张力。一般配置是平面的,由单个一阶方程表示的切向角。不同参数的影响,代表性的形状,轨道在角曲率空间,和应力分布。作为限制性情况,解决方案包括对应于“牵引链”的配置以及柔性缆线在高粘性流体中的拖曳、卷绕和沉降。对应于无限长,半无限,和有限长度曲线的参数空间的区域划定。几乎所有曲线的对向角都小于$π$弧度,但在区域之间的边界上会出现具有双倍或无限范围的奇怪特殊情况。单独的过渡张力的行为,和违反直觉的结果,关于有限的牵引张力无限长的电缆,提出。几个物理启发的边值问题的解决和讨论。

英文摘要:

This work explores a simple model of a slender, flexible structure in a uniform flow, providing analytical solutions for the translating, axially flowing equilibria of strings subjected to a uniform body force and drag forces linear in the velocities. The classical catenaries are extended to a five-parameter family of curves. A sixth parameter affects the tension in the curves. Generic configurations are planar, represented by a single first order equation for the tangential angle. The effects of varying parameters on representative shapes, orbits in angle-curvature space, and stress distributions are shown. As limiting cases, the solutions include configurations corresponding to "lariat chains" and the towing, reeling, and sedimentation of flexible cables in a highly viscous fluid. Regions of parameter space corresponding to infinitely long, semi-infinite, and finite length curves are delineated. Almost all curves subtend an angle less than $π$ radians, but curious special cases with doubled or infinite range occur on the borders between regions. Separate transitions in the tension behavior, and counterintuitive results regarding finite towing tensions for infinitely long cables, are presented. Several physically inspired boundary value problems are solved and discussed.

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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