Campus Units
Mechanical Engineering, Plant Sciences Institute, Mathematics
Document Type
Article
Publication Version
Submitted Manuscript
Publication Date
2020
Journal or Book Title
arXiv
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 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 1−106 encompassing the drag crisis regime; simulating flow features across a semi-truck for investigating the effect of platooning on efficiency.
Copyright Owner
The Author(s)
Copyright Date
2020
Language
en
File Format
application/pdf
Recommended Citation
Saurabh, Kumar; Gao, Boshun; Fernando, Milinda; Xu, Songzhe; Khara, Biswajit; Khanwale, Makrand A.; Hsu, Ming-Chen; Krishnamurthy, Adarsh; Sundar, Hari; and Ganapathysubramanian, Baskar, "Industrial scale large eddy simulations (LES) with adaptive octree meshes using immersogeometric analysis" (2020). Mechanical Engineering Publications. 435.
https://lib.dr.iastate.edu/me_pubs/435
Included in
Acoustics, Dynamics, and Controls Commons, Dynamical Systems Commons, Numerical Analysis and Scientific Computing Commons
Comments
This is a pre-print of the article Saurabh, Kumar, Boshun Gao, Milinda Fernando, Songzhe Xu, Biswajit Khara, Makrand A. Khanwale, Ming-Chen Hsu, Adarsh Krishnamurthy, Hari Sundar, and Baskar Ganapathysubramanian. "Industrial scale large eddy simulations (LES) with adaptive octree meshes using immersogeometric analysis." arXiv preprint arXiv:2009.00706 (2020). Posted with permission.