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Discrete boundary smoothing using control node parameterisation for aerodynamic shape optimisation

David Naumann, Ben Evans Orcid Logo, Sean Walton Orcid Logo, Oubay Hassan Orcid Logo

Applied Mathematical Modelling, Volume: 48, Pages: 113 - 133

Swansea University Authors: David Naumann, Ben Evans Orcid Logo, Sean Walton Orcid Logo, Oubay Hassan Orcid Logo

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DOI (Published version): 10.1016/j.apm.2017.03.042

Abstract

This paper presents an automated aerodynamic optimisation algorithm using a novel method of parameterisingthe search domain and geometry by employing user{dened control nodes. The displacement of the control nodesis coupled to the shape boundary movement via a `discrete boundary smoothing'....

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Published in: Applied Mathematical Modelling
ISSN: 0307-904X
Published: Elsevier BV 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa32662
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spelling 2020-06-27T16:53:34.3132406 v2 32662 2017-03-24 Discrete boundary smoothing using control node parameterisation for aerodynamic shape optimisation 3c440fef6cc0e4d504c2bce3efd8d34d David Naumann David Naumann true false 3d273fecc8121fe6b53b8fe5281b9c97 0000-0003-3662-9583 Ben Evans Ben Evans true false 0ec10d5e3ed3720a2d578417a894cf49 0000-0002-6451-265X Sean Walton Sean Walton true false 07479d73eba3773d8904cbfbacc57c5b 0000-0001-7472-3218 Oubay Hassan Oubay Hassan true false 2017-03-24 FGSEN This paper presents an automated aerodynamic optimisation algorithm using a novel method of parameterisingthe search domain and geometry by employing user{dened control nodes. The displacement of the control nodesis coupled to the shape boundary movement via a `discrete boundary smoothing&apos;. This is initiated by a lineardeformation followed by a discrete smoothing step to act on the boundary during the mesh movement basedon the change in its second derivative. Implementing the discrete boundary smoothing allows both linear andnon-linear shape deformation along the same boundary dependent on the preference of the user. The domainmesh movement is coupled to the shape boundary movement via a Delaunay graph mapping. An optimisationalgorithm called Modied Cuckoo Search (MCS) is used acting within the prescribed design space dened by theallowed range of control node displacement. In order to obtain the aerodynamic design tness a nite volumecompressible Navier-Stokes solver is utilized. The resulting coupled algorithm is applied to a range of case studiesin two dimensional space including the optimisation of a RAE2822 aerofoil and the optimisation of an intakeduct under subsonic, transonic and supersonic ow conditions. The discrete mesh{based optimisation approachoutlined is shown to be eective in terms of its generalised applicability, intuitiveness and design space denition. Journal Article Applied Mathematical Modelling 48 113 133 Elsevier BV 0307-904X mesh movement, Cuckoo search, computational uid dynamics, aerodynamic shape optimization, shape parameterisation 1 8 2017 2017-08-01 10.1016/j.apm.2017.03.042 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2020-06-27T16:53:34.3132406 2017-03-24T11:33:53.1411175 David Naumann 1 Ben Evans 0000-0003-3662-9583 2 Sean Walton 0000-0002-6451-265X 3 Oubay Hassan 0000-0001-7472-3218 4 0032662-06042017134000.pdf naumann2017.pdf 2017-04-06T13:40:00.1370000 Output 10540008 application/pdf Accepted Manuscript true 2018-04-06T00:00:00.0000000 Released under the terms of a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND). true eng
title Discrete boundary smoothing using control node parameterisation for aerodynamic shape optimisation
spellingShingle Discrete boundary smoothing using control node parameterisation for aerodynamic shape optimisation
David Naumann
Ben Evans
Sean Walton
Oubay Hassan
title_short Discrete boundary smoothing using control node parameterisation for aerodynamic shape optimisation
title_full Discrete boundary smoothing using control node parameterisation for aerodynamic shape optimisation
title_fullStr Discrete boundary smoothing using control node parameterisation for aerodynamic shape optimisation
title_full_unstemmed Discrete boundary smoothing using control node parameterisation for aerodynamic shape optimisation
title_sort Discrete boundary smoothing using control node parameterisation for aerodynamic shape optimisation
author_id_str_mv 3c440fef6cc0e4d504c2bce3efd8d34d
3d273fecc8121fe6b53b8fe5281b9c97
0ec10d5e3ed3720a2d578417a894cf49
07479d73eba3773d8904cbfbacc57c5b
author_id_fullname_str_mv 3c440fef6cc0e4d504c2bce3efd8d34d_***_David Naumann
3d273fecc8121fe6b53b8fe5281b9c97_***_Ben Evans
0ec10d5e3ed3720a2d578417a894cf49_***_Sean Walton
07479d73eba3773d8904cbfbacc57c5b_***_Oubay Hassan
author David Naumann
Ben Evans
Sean Walton
Oubay Hassan
author2 David Naumann
Ben Evans
Sean Walton
Oubay Hassan
format Journal article
container_title Applied Mathematical Modelling
container_volume 48
container_start_page 113
publishDate 2017
institution Swansea University
issn 0307-904X
doi_str_mv 10.1016/j.apm.2017.03.042
publisher Elsevier BV
document_store_str 1
active_str 0
description This paper presents an automated aerodynamic optimisation algorithm using a novel method of parameterisingthe search domain and geometry by employing user{dened control nodes. The displacement of the control nodesis coupled to the shape boundary movement via a `discrete boundary smoothing&apos;. This is initiated by a lineardeformation followed by a discrete smoothing step to act on the boundary during the mesh movement basedon the change in its second derivative. Implementing the discrete boundary smoothing allows both linear andnon-linear shape deformation along the same boundary dependent on the preference of the user. The domainmesh movement is coupled to the shape boundary movement via a Delaunay graph mapping. An optimisationalgorithm called Modied Cuckoo Search (MCS) is used acting within the prescribed design space dened by theallowed range of control node displacement. In order to obtain the aerodynamic design tness a nite volumecompressible Navier-Stokes solver is utilized. The resulting coupled algorithm is applied to a range of case studiesin two dimensional space including the optimisation of a RAE2822 aerofoil and the optimisation of an intakeduct under subsonic, transonic and supersonic ow conditions. The discrete mesh{based optimisation approachoutlined is shown to be eective in terms of its generalised applicability, intuitiveness and design space denition.
published_date 2017-08-01T03:40:06Z
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score 11.012678

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