Grid-independent large-eddy simulation of turbulent wake flow using explicit differential filters
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SCOPUS
KCI
- Title
- Grid-independent large-eddy simulation of turbulent wake flow using explicit differential filters
- Authors
- Kang, Myeongseok; You, Donghyun; Singh, Satbir
- Date Issued
- 2019-04
- Publisher
- KOREAN SOC MECHANICAL ENGINEERS
- Abstract
- Large-eddy simulations (LES) using explicit filtering are performed to obtain grid-independent solutions of turbulent wake flow behind a circular cylinder at Re-D = 3900 on non-Cartesian type grids. A differential elliptic equation where the filter kernel is implicitly defined is discretized in an unstructured-grid solver to enable explicit filtering on non-Cartesian grids. The separation of filtering procedure from discretization is known to produce an LES solution of which error is mainly attributed to the capability of a sub-filter scale (SFS) model. Equipped with the differential filter and the Vreman SFS model, explicitly filtered LES on unstructured grids is shown to produce nearly grid-independent solutions for flow over a circular cylinder at a critical Reynolds number.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/100178
- DOI
- 10.1007/s12206-019-0316-z
- ISSN
- 1738-494X
- Article Type
- Article
- Citation
- JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, vol. 33, no. 4, page. 1641 - 1649, 2019-04
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