A framework for the generation of high-order curvilinear hybrid meshes for CFD simulations
File(s)imr26-paper.pdf (9.77 MB)
Published version
Author(s)
Type
Conference Paper
Abstract
We present a pipeline of state-of-the-art techniques for the generation of high-order meshes that contain highly stretched elements in viscous boundary layers, and are suitable for flow simulations at high Reynolds numbers. The pipeline uses CADfix to generate a medial object based decomposition of the domain, which wraps the wall boundaries with prismatic partitions. The use of medial object allows the prism height to be larger than is generally possible with advancing layer techniques. CADfix subsequently generates a hybrid straight-sided (or linear) mesh. A high-order mesh is then generated a posteriori using NekMesh, a high-order mesh generator within the Nektar++ framework. During the high-order mesh generation process, the CAD definition of the domain is interrogated; we describe the process for integrating the CADfix API as an alternative backend geometry engine for NekMesh, and discuss some of the implementation issues encountered. Finally, we illustrate the methodology using three geometries of increasing complexity: a wing tip, a simplified landing gear and an aircraft in cruise configuration.
Editor(s)
Owen, S
Roca, X
Mitchell, SA
Date Issued
2017-10-18
Date Acceptance
2017-10-01
Citation
26TH INTERNATIONAL MESHING ROUNDTABLE, (IMR26 2017), 2017, 203, pp.206-218
ISSN
1877-7058
Publisher
ELSEVIER SCIENCE BV
Start Page
206
End Page
218
Journal / Book Title
26TH INTERNATIONAL MESHING ROUNDTABLE, (IMR26 2017)
Volume
203
Copyright Statement
© 2017 The Author(s). Published by Elsevier Ltd. Available under a Creative Commons license (https://creativecommons.org/licenses/by-nc-nd/4.0/)
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000426435100017&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Source
26th International Meshing Roundtable (IMR)
Subjects
Science & Technology
Technology
Physical Sciences
Engineering, Multidisciplinary
Mathematics, Interdisciplinary Applications
Mechanics
Engineering
Mathematics
High-order curvilinear meshes
CAD interface
Medial-object domain decomposition
Isoparametric bounday-layer meshing
Publication Status
Published
Start Date
2017-09-18
Finish Date
2017-09-21
Coverage Spatial
Barcelona, SPAIN