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Industrial scale Large Eddy Simulations with adaptive octree meshes using immersogeometric analysis
- Source :
- Computers & Mathematics with Applications. 97:28-44
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- We present a variant of the immersed boundary method integrated with octree meshes for highly efficient and accurate Large-Eddy Simulations (LES) of flows around complex geometries. We demonstrate the scalability of the proposed method up to $\mathcal{O}(32K)$ processors. This is achieved by (a) rapid in-out tests; (b) adaptive quadrature for an accurate evaluation of forces; (c) tensorized evaluation during matrix assembly. We showcase this method on two non-trivial applications: accurately computing the drag coefficient of a sphere across Reynolds numbers $1-10^6$ encompassing the drag crisis regime; simulating flow features across a semi-truck for investigating the effect of platooning on efficiency.<br />Comment: Accepted for publication at Computer and Mathematics with Applications
- Subjects :
- FOS: Computer and information sciences
Drag coefficient
FOS: Physical sciences
010103 numerical & computational mathematics
01 natural sciences
Computational science
Computational Engineering, Finance, and Science (cs.CE)
Physics::Fluid Dynamics
Matrix (mathematics)
Octree
symbols.namesake
Drag crisis
FOS: Mathematics
Polygon mesh
Mathematics - Numerical Analysis
0101 mathematics
Computer Science - Computational Engineering, Finance, and Science
ComputingMethodologies_COMPUTERGRAPHICS
Mathematics
Fluid Dynamics (physics.flu-dyn)
Reynolds number
Physics - Fluid Dynamics
Numerical Analysis (math.NA)
Immersed boundary method
010101 applied mathematics
Computational Mathematics
Computational Theory and Mathematics
Modeling and Simulation
symbols
Adaptive quadrature
Subjects
Details
- ISSN :
- 08981221
- Volume :
- 97
- Database :
- OpenAIRE
- Journal :
- Computers & Mathematics with Applications
- Accession number :
- edsair.doi.dedup.....f435a0b7f49c57a222dce866b969bc73