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arXiv 1002.3308physics.flu-dynphysics.class-ph
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非对称转子间的流体动力吸引和排斥

Hydrodynamic attraction and repulsion between asymmetric rotors

Steffen Schreiber, Thomas Fischer, Walter Zimmermann

摘要:

在低雷诺数下,由外部旋转场驱动的哑铃之间的流体动力学相互作用可以是吸引的或排斥的。不同的不对称形状或不同的耦合到外部场的哑铃经历破坏时间反演对称性的构象重排。导致吸引或排斥的参数范围进行了数值探索。我们的模拟结果表明,旋转场可能是一个有用的途径组装,拆卸和排序的不同形状的粒子,以及集体微游泳者的研究。

英文摘要:

At low Reynolds numbers, the hydrodynamic interaction between dumbbells driven by an external rotating field can be attractive or repulsive. Dumbbells of dissimilar asymmetric shape or different coupling to the external field undergo conformational rearrangements that break the time reversal symmetry. The parameter ranges leading to attraction or repulsion are explored numerically. The results of our simulations suggest that rotating fields may be a useful avenue for the assembly, disassembly, and sorting of particles of different shape as well as for the study of collective micro-swimmers.

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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