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On the need for higher order interpolation with overset grid methods

On the need for higher order interpolation with overset grid methods
On the need for higher order interpolation with overset grid methods
Overset methods, by overlapping several grids, allow large and arbitrary motion of bodies. First developed for the aerospace industry (Benek et al., 1985), it is now used for a wider range of applications like maritime ones (Carrica et al., 2013). At the fringes of each grid, the coupling is done by interpolating field variables. This interpolation step is key in any overset computations since the choice of the interpolation scheme directly influences the accuracy of the solution and the performance. Most overset implementations done for unstructured CFD codes uses 1st or at most 2nd order interpolation schemes (Gatin et al., 2018, V ̈olkner et al., 2017, Chandar et al., 2018) but higher order interpolation schemes (3rd or 4th) are not often studied (Chandar, 2019). This paper evaluates the use of higher order (higher than 2nd order) interpolation schemes for the overset method by comparing the accuracy of different interpolation schemes on a Poiseuille flow test case, no performance study is however conducted here. The overset implementation used in this study is a coupling between the CFD solver ReFRESCO and the overset library Suggar++ (Noack and Boger, 2009).
overset, refresco, cfd, suggar, interpolation, least squares
1-6
Lemaire, Sebastien
05986dec-3675-41f4-b9a4-ae4036390d6b
Vaz, Guilherme
a053069d-9831-4b28-a9c0-6503ddaab25d
Turnock, Stephen
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Lemaire, Sebastien
05986dec-3675-41f4-b9a4-ae4036390d6b
Vaz, Guilherme
a053069d-9831-4b28-a9c0-6503ddaab25d
Turnock, Stephen
d6442f5c-d9af-4fdb-8406-7c79a92b26ce

Lemaire, Sebastien, Vaz, Guilherme and Turnock, Stephen (2019) On the need for higher order interpolation with overset grid methods. In Numerical Towing Tank Symposium 2019. pp. 1-6 .

Record type: Conference or Workshop Item (Paper)

Abstract

Overset methods, by overlapping several grids, allow large and arbitrary motion of bodies. First developed for the aerospace industry (Benek et al., 1985), it is now used for a wider range of applications like maritime ones (Carrica et al., 2013). At the fringes of each grid, the coupling is done by interpolating field variables. This interpolation step is key in any overset computations since the choice of the interpolation scheme directly influences the accuracy of the solution and the performance. Most overset implementations done for unstructured CFD codes uses 1st or at most 2nd order interpolation schemes (Gatin et al., 2018, V ̈olkner et al., 2017, Chandar et al., 2018) but higher order interpolation schemes (3rd or 4th) are not often studied (Chandar, 2019). This paper evaluates the use of higher order (higher than 2nd order) interpolation schemes for the overset method by comparing the accuracy of different interpolation schemes on a Poiseuille flow test case, no performance study is however conducted here. The overset implementation used in this study is a coupling between the CFD solver ReFRESCO and the overset library Suggar++ (Noack and Boger, 2009).

Text
Lemaire S et al - On the Need for Higher Order Interpolation with Overset Grid Methods - Accepted Manuscript
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More information

Published date: 1 October 2019
Venue - Dates: 22nd Numerical Towing Tank Symposium, Hotel dos Templários, Portugal, 2018-09-30 - 2019-10-01
Keywords: overset, refresco, cfd, suggar, interpolation, least squares

Identifiers

Local EPrints ID: 434785
URI: http://eprints.soton.ac.uk/id/eprint/434785
PURE UUID: 390df862-4254-4025-a89c-b4b74a4f308e
ORCID for Sebastien 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: 09 Oct 2019 16:30
Last modified: 14 Aug 2020 01:47

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