Multiblock structured grids for direct numerical simulations of transonic wing sections
Multiblock structured grids for direct numerical simulations of transonic wing sections
Direct numerical simulations of transitional and turbulent flows around airfoils at moderate and high Reynolds number require large and complex grids consisting of billions of grid points. Advances in computational resources towards exa-scale computing (1018 floating point operations per second) and powerful algorithms that aim to exploit the full potential of modern high-performance computing architectures allow an increase of size and complexity of such simulations. However, high-order numerical methods for structured curvilinear grids require continuous metric terms up to the second order of derivatives or higher. An evaluation of the requirements on grid-generation tools, stressing scalability, precision and flexibility, suggested the need for handcrafted grids. In the present contribution, we outline a method based on polynomial functions and identify the benefits of such techniques for large structured multi-block high-fidelity grid generation around airfoil geometries, also providing an open-source tool for airfoils with sharp as well as blunt trailing edges.
Zauner, Markus
c0207f79-62cc-4909-8aa0-6bb9d99e1ea3
Sandham, Neil
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12 July 2018
Zauner, Markus
c0207f79-62cc-4909-8aa0-6bb9d99e1ea3
Sandham, Neil
0024d8cd-c788-4811-a470-57934fbdcf97
Zauner, Markus and Sandham, Neil
(2018)
Multiblock structured grids for direct numerical simulations of transonic wing sections.
International Conference on Computational Fluid Dynamics ICCFD10, Hilton Barcelona, Barcelona, Spain.
09 - 13 Jul 2018.
18 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Direct numerical simulations of transitional and turbulent flows around airfoils at moderate and high Reynolds number require large and complex grids consisting of billions of grid points. Advances in computational resources towards exa-scale computing (1018 floating point operations per second) and powerful algorithms that aim to exploit the full potential of modern high-performance computing architectures allow an increase of size and complexity of such simulations. However, high-order numerical methods for structured curvilinear grids require continuous metric terms up to the second order of derivatives or higher. An evaluation of the requirements on grid-generation tools, stressing scalability, precision and flexibility, suggested the need for handcrafted grids. In the present contribution, we outline a method based on polynomial functions and identify the benefits of such techniques for large structured multi-block high-fidelity grid generation around airfoil geometries, also providing an open-source tool for airfoils with sharp as well as blunt trailing edges.
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Published date: 12 July 2018
Venue - Dates:
International Conference on Computational Fluid Dynamics ICCFD10, Hilton Barcelona, Barcelona, Spain, 2018-07-09 - 2018-07-13
Identifiers
Local EPrints ID: 422551
URI: http://eprints.soton.ac.uk/id/eprint/422551
PURE UUID: d8f94edb-1720-4bfd-add1-7617958a6a60
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Date deposited: 25 Jul 2018 16:30
Last modified: 13 Dec 2024 02:36
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Contributors
Author:
Markus Zauner
Author:
Neil Sandham
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