Octree Optimized Micrometric Fibrous Microstructure Generation for Domain Reconstruction and Flow Simulation

Entropy

卷:23

Hugues Digonnet¹  Luisa Silva¹  Louis Douteau¹  Nesrine Aissa¹  Emmanuelle Abisset-Chavanne²  Patrice Laure³ 

[1] High Performance Computing Insitute, Ecole Centrale de Nantes, 1 rue de la Noe, 44300 Nantes, France;

[2] I2M Institute, CNRS, Arts et Métiers Paris Tech, University Bordeaux, Bordeaux INP, 33400 Talence, France;

[3] Laboratoire J.-A. Dieudonné, CNRS UMR 6621, Université de Nice-Sophia Antipolis, 06000 Nice, France;

关键词: octree optimization;    microstructure generation;    domain reconstruction;    flow simulation;    permeability computing;   

DOI  :  10.3390/e23091156

来源: DOAJ

【 摘 要 】

Over recent decades, tremendous advances in the field of scalable numerical tools and mesh immersion techniques have been achieved to improve numerical efficiency while preserving a good quality of the obtained results. In this context, an octree-optimized microstructure generation and domain reconstruction with adaptative meshing is presented and illustrated through a flow simulation example applied to permeability computation of micrometric fibrous materials. Thanks to the octree implementation, the numerous distance calculations in these processes are decreased, thus the computational complexity is reduced. Using the parallel environment of the ICI-tech library as a mesher and a solver, a large scale case study is performed. The study is applied to the computation of the full permeability tensor of a three-dimensional microstructure containing 10,000 fibers. The considered flow is a Stokes flow and it is solved with a stabilized finite element formulation and a monolithic approach.

【 授权许可】

Unknown