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arXiv · 2310.09498

Estimates for stress concentration between two adjacent rigid inclusions in Stokes flow

Haigang Li·Longjuan Xu
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Abstract

In this paper, we establish the estimates for the gradient and the second-order partial derivatives for the Stokes flow in the presence of two closely located strictly convex inclusions in dimension three. Moreover, the blow-up rate of the gradient is showed to be optimal by a pointwise upper bound and a lower bound in the narrowest region. We also show the optimal blow-up rate of Cauchy stress tensor. In dimensions greater than three, the upper bounds of the gradient are established. These results answer the questions raised in [25].

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Haigang Li, Longjuan Xu. 2023-10-14. Estimates for stress concentration between two adjacent rigid inclusions in Stokes flow. https://arxiv.org/abs/2310.09498

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