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Implementation and verification of an explicit overset grid method

Implementation and verification of an explicit overset grid method
Implementation and verification of an explicit overset grid method
This paper presents an initial implementation of the overset method in the solver ReFRESCO. The DCI (Domain Connectivity Information) is computed by the external library Suggar++ and the coupling between meshes is done explicitly. Manufactured solutions and analytical solutions are used in order to quantitatively assess the discretisation errors. The grid refinement study performed on two test cases shows that the overset method does not affect the convergence towards the exact analytical solution. However, when solving the continuity equation, pressure fluctuations are observed in the overlapped region and a mass imbalance is introduced.
overset, verification, explicit, refresco, suggar, dirtlib
112-117
Lemaire, Sébastien
05986dec-3675-41f4-b9a4-ae4036390d6b
Vaz, Guilherme
a053069d-9831-4b28-a9c0-6503ddaab25d
Turnock, Stephen
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Lemaire, Sébastien
05986dec-3675-41f4-b9a4-ae4036390d6b
Vaz, Guilherme
a053069d-9831-4b28-a9c0-6503ddaab25d
Turnock, Stephen
d6442f5c-d9af-4fdb-8406-7c79a92b26ce

Lemaire, Sébastien, Vaz, Guilherme and Turnock, Stephen (2018) Implementation and verification of an explicit overset grid method. In 21st Numerical Towing Tank Symposium (NuTTS'18). pp. 112-117 .

Record type: Conference or Workshop Item (Paper)

Abstract

This paper presents an initial implementation of the overset method in the solver ReFRESCO. The DCI (Domain Connectivity Information) is computed by the external library Suggar++ and the coupling between meshes is done explicitly. Manufactured solutions and analytical solutions are used in order to quantitatively assess the discretisation errors. The grid refinement study performed on two test cases shows that the overset method does not affect the convergence towards the exact analytical solution. However, when solving the continuity equation, pressure fluctuations are observed in the overlapped region and a mass imbalance is introduced.

Text
Lemaire S et al - Implementation and Verification of an Explicit Overset Grid Method - Accepted Manuscript
Available under License University of Southampton Accepted Manuscript Licence.
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More information

Published date: 30 September 2018
Venue - Dates: 21th Numerical Towing Tank Symposium, Hotel Oasi Neumann, Cortona, Italy, 2018-09-30 - 2018-10-02
Keywords: overset, verification, explicit, refresco, suggar, dirtlib

Identifiers

Local EPrints ID: 424966
URI: http://eprints.soton.ac.uk/id/eprint/424966
PURE UUID: bf5712e1-4871-4be0-86ca-3ad9e018c07e
ORCID for Sébastien Lemaire: ORCID iD orcid.org/0000-0002-9959-2100
ORCID for Stephen Turnock: ORCID iD orcid.org/0000-0001-6288-0400

Catalogue record

Date deposited: 08 Oct 2018 16:30
Last modified: 16 Mar 2024 02:37

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Contributors

Author: Sébastien Lemaire ORCID iD
Author: Guilherme Vaz
Author: Stephen Turnock ORCID iD

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