Modeling of periodical shearing flow in a fibrous space with applications in shear-induced brain injury
| Author(s) | Lang, Ji | |
| Author(s) | Wang, Liyun | |
| Author(s) | Wu, Qianhong | |
| Date Accessioned | 2025-04-15T20:17:12Z | |
| Date Available | 2025-04-15T20:17:12Z | |
| Publication Date | 2024-06-04 | |
| Description | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Ji Lang, Liyun Wang, Qianhong Wu; Modeling of periodical shearing flow in a fibrous space with applications in shear-induced brain injury. Physics of Fluids 1 June 2024; 36 (6): 061901. https://doi.org/10.1063/5.0206943 and may be found at https://doi.org/10.1063/5.0206943. © 2024 Author(s). Published under an exclusive license by AIP Publishing. This article will be embargoed until 06/04/2025. | |
| Abstract | This paper presents a theoretical model examining the interaction between a fibrous network and viscous fluid flow driven by an oscillating boundary. The aim is to understand how oscillating impacts are transmitted from the skull, through the arachnoid trabeculae network filled with cerebrospinal fluid, as observed in shaken baby syndrome. The model uses an effective medium approach to determine the fluid velocity field while each fiber is treated as a soft string undergoing deformation. Results indicate that the frequency of oscillation, fiber stiffness, and porous structure resistance significantly influence the oscillating shearing flow, as indicated by the Womersley (Wo), Brinkman (a), and Bingham (Bm ) numbers. Application of the model to shaken baby syndrome suggests that oscillations in the cerebrospinal fluid and arachnoid trabeculae can significantly surpass those on the skull, leading to intense shear stress penetration to the brain. This model is the first study to integrate the dynamic response of string-like fibrous networks in fluid flows with oscillating boundaries and offers a quantitative framework for predicting the transmission of shearing forces from the skull to the brain matter. | |
| Sponsor | This research was supported by the National Science Foundation under Award No. 2322067. Dr. Lang acknowledges the support from the National Natural Science Foundation of China (No. 12202101) and the Natural Science Foundation of Jiangsu Province (No. BK20220793). | |
| Citation | Ji Lang, Liyun Wang, Qianhong Wu; Modeling of periodical shearing flow in a fibrous space with applications in shear-induced brain injury. Physics of Fluids 1 June 2024; 36 (6): 061901. https://doi.org/10.1063/5.0206943 | |
| ISSN | 1089-7666 | |
| URL | https://udspace.udel.edu/handle/19716/36042 | |
| Language | en_US | |
| Publisher | Physics of Fluids | |
| Keywords | porous media | |
| Keywords | fluid mechanics | |
| Keywords | fluid flows | |
| Keywords | laminar flows | |
| Keywords | viscous liquid | |
| Keywords | diseases and conditions | |
| Keywords | biofluids | |
| Title | Modeling of periodical shearing flow in a fibrous space with applications in shear-induced brain injury | |
| Type | Article |
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