مورد إلكتروني
An arbitrary Lagrangian-Eulerian method for simulating interfacial dynamics between a hydrogel and a fluid
| العنوان: | An arbitrary Lagrangian-Eulerian method for simulating interfacial dynamics between a hydrogel and a fluid |
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| بيانات النشر: | Academic Press/Elsevier 2022-02-15 |
| تفاصيل مُضافة: | Li, Lei Zhang, Jiaqi Xu, Zelai Young, Y. -N. Feng, James J. Yue, Pengtao |
| نوع الوثيقة: | Electronic Resource |
| وصف مادي: | 22 page(s) |
| مستخلص: | Hydrogels are crosslinked polymer networks swollen with an aqueous solvent, and play central roles in biomicrofluidic devices. In such applications, the gel is often in contact with a flowing fluid, thus setting up a fluid-hydrogel two-phase system. Using a recently proposed model (Young et al. [41] 2019), we treat the hydrogel as a poroelastic material consisting of a Saint Venant-Kirchhoff polymer network and a Newtonian viscous solvent, and develop a finite-element method for computing flows involving a fluid-hydrogel interface. The interface is tracked by using a fixed-mesh arbitrary Lagrangian-Eulerian method that maps the interface to a reference configuration. The interfacial deformation is coupled with the fluid and solid governing equations into a monolithic algorithm using the finite-element library deal.II. The code is validated against available analytical solutions in several non-trivial flow problems: one-dimensional compression of a gel layer by a uniform flow, two-layer shear flow, and the deformation of a Darcy gel particle in a planar extensional flow. In all cases, the numerical solutions are in excellent agreement with the analytical solutions. Numerical tests show second-order convergence with respect to mesh refinement, and first-order convergence with respect to time-step refinement. |
| مصطلحات الفهرس: | Fixed-mesh ALE method, Poroelasticity model, Fluid-structure interaction, Hyperelasticity, Permeability, POROUS-MEDIUM, HOMOGENEOUS FLUID, MOMENTUM-TRANSFER, DRUG-DELIVERY, BOUNDARY, FLOW, Article - Refereed |
| DOI: | 10.1016.j.jcp.2021.110851 |
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| الإتاحة: | Open access content. Open access content In Copyright http://rightsstatements.org/vocab/InC/1.0 |
| ملاحظة: | English |
| أرقام أخرى: | VPI oai:vtechworks.lib.vt.edu:10919/112970 doi:10.1016/j.jcp.2021.110851 EISSN:1090-2716 ISSN:0021-9991 1393061205 |
| المصدر المساهم: | VIRGINIA TECH From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1393061205 |
| قاعدة البيانات: | OAIster |
| DOI: | 10.1016.j.jcp.2021.110851 |
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