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Multiblock structured grids for direct numerical simulations of transonic wing sections

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
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Sandham, Neil
0024d8cd-c788-4811-a470-57934fbdcf97
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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More information

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
ORCID for Markus Zauner: ORCID iD orcid.org/0000-0002-6644-2990
ORCID for Neil Sandham: ORCID iD orcid.org/0000-0002-5107-0944

Catalogue record

Date deposited: 25 Jul 2018 16:30
Last modified: 26 Nov 2021 02:41

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Contributors

Author: Markus Zauner ORCID iD
Author: Neil Sandham ORCID iD

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