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arXiv 1806.07795math.AP
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Stokes流中颗粒的沉降

Sedimentation of particles in Stokes flow

Amina Mecherbet

摘要:

本文考虑$N$全同球形粒子在均匀重力场中的沉降。模型中考虑了粒子的转动,忽略了惯性。利用反射的方法,我们推广了[R. M. Höfer,Sedimentation of inertialess particles in Stokes flows,arXiv:1610.03748,(2016)]通过讨论在有限时间内守恒的最佳粒子距离。我们还证明了粒子与由Oseen张量给出的奇异相互作用力相互作用,并证明了Vlasov-斯托克斯方程的平均场近似符合[M.豪雷和体育。贾宾,具有奇异力的弗拉索夫方程的粒子近似:混沌的传播,Ann. Sci。EC.诺姆Super. (4),(2015)]和[M.欧拉型方程的涡近似的Wasserstein距离,数学模型方法应用科学。19,(2009),pp. [1357,1384]]。

英文摘要:

In this paper, we consider $N$ identical spherical particles sedimenting in a uniform gravitational field. Particle rotation is included in the model while inertia is neglected. Using the method of reflections, we extend the investigation of [R. M. Höfer, Sedimentation of inertialess particles in Stokes flows, arXiv:1610.03748, (2016)] by discussing the optimal particle distance which is conserved in finite time. We also prove that the particles interact with a singular interaction force given by the Oseen tensor and justify the mean field approximation of Vlasov-Stokes equations in the spirit of [M. Hauray and P. E. Jabin, Particle approximation of Vlasov equations with singular forces : propagation of chaos, Ann. Sci. Ec. Norm. Super. (4), (2015)] and [M. Hauray, Wasserstein distances for vortices approximation of Euler-type equations, Math. Models Methods Appl. Sci. 19, (2009), pp. [1357,1384]].

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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