arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1206.2194cond-mat.softcond-mat.stat-mechphysics.bio-ph
收藏

剪切流中热噪声对囊泡和胶囊的影响

Effect of thermal noise on vesicles and capsules in shear flow

David Abreu, Udo Seifert

摘要:

我们不断增加热噪声减少模型的不变形囊泡和胶囊在剪切流,并推导出相应的随机运动方程的解析。我们计算了稳态的概率分布函数,并构建了相应的相图为不同的动力学制度。对于流体囊泡,我们预测,在小的剪切速率热波动引起的任何粘度对比度的翻滚运动。对于弹性胶囊,由于热混合,间歇性制度出现在确定性模型预测只有纯坦克踩踏或翻滚的区域。

英文摘要:

We add thermal noise consistently to reduced models of undeformable vesicles and capsules in shear flow and derive analytically the corresponding stochastic equations of motion. We calculate the steady-state probability distribution function and construct the corresponding phase diagrams for the different dynamical regimes. For fluid vesicles, we predict that at small shear rates thermal fluctuations induce a tumbling motion for any viscosity contrast. For elastic capsules, due to thermal mixing, an intermittent regime appears in regions where deterministic models predict only pure tank treading or tumbling.

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。

↑