An improved ghost-cell immersed boundary method for compressible flow simulations

Handle URI:
http://hdl.handle.net/10754/610650
Title:
An improved ghost-cell immersed boundary method for compressible flow simulations
Authors:
Chi, Cheng ( 0000-0002-8512-8876 ) ; Lee, Bok Jik; Im, Hong G. ( 0000-0001-7080-1266 )
Abstract:
This study presents an improved ghost-cell immersed boundary approach to represent a solid body in compressible flow simulations. In contrast to the commonly used approaches, in the present work ghost cells are mirrored through the boundary described using a level-set method to farther image points, incorporating a higher-order extra/interpolation scheme for the ghost cell values. A sensor is introduced to deal with image points near the discontinuities in the flow field. Adaptive mesh refinement (AMR) is used to improve the representation of the geometry efficiently in the Cartesian grid system. The improved ghost-cell method is validated against four test cases: (a) double Mach reflections on a ramp, (b) smooth Prandtl-Meyer expansion flows, (c) supersonic flows in a wind tunnel with a forward-facing step, and (d) supersonic flows over a circular cylinder. It is demonstrated that the improved ghost-cell method can reach the accuracy of second order in L1 norm and higher than first order in L∞ norm. Direct comparisons against the cut-cell method demonstrate that the improved ghost-cell method is almost equally accurate with better efficiency for boundary representation in high-fidelity compressible flow simulations. Copyright © 2016 John Wiley & Sons, Ltd.
KAUST Department:
Clean Combustion Research Center
Citation:
An improved ghost-cell immersed boundary method for compressible flow simulations 2016 International Journal for Numerical Methods in Fluids
Publisher:
Wiley-Blackwell
Journal:
International Journal for Numerical Methods in Fluids
Issue Date:
20-May-2016
DOI:
10.1002/fld.4262
Type:
Article
ISSN:
02712091
Sponsors:
The work reported in this study was supported by the King Abdullah University of Science and Technology (KAUST).
Additional Links:
http://doi.wiley.com/10.1002/fld.4262
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorChi, Chengen
dc.contributor.authorLee, Bok Jiken
dc.contributor.authorIm, Hong G.en
dc.date.accessioned2016-05-25T08:48:42Z-
dc.date.available2016-05-25T08:48:42Z-
dc.date.issued2016-05-20-
dc.identifier.citationAn improved ghost-cell immersed boundary method for compressible flow simulations 2016 International Journal for Numerical Methods in Fluidsen
dc.identifier.issn02712091-
dc.identifier.doi10.1002/fld.4262-
dc.identifier.urihttp://hdl.handle.net/10754/610650-
dc.description.abstractThis study presents an improved ghost-cell immersed boundary approach to represent a solid body in compressible flow simulations. In contrast to the commonly used approaches, in the present work ghost cells are mirrored through the boundary described using a level-set method to farther image points, incorporating a higher-order extra/interpolation scheme for the ghost cell values. A sensor is introduced to deal with image points near the discontinuities in the flow field. Adaptive mesh refinement (AMR) is used to improve the representation of the geometry efficiently in the Cartesian grid system. The improved ghost-cell method is validated against four test cases: (a) double Mach reflections on a ramp, (b) smooth Prandtl-Meyer expansion flows, (c) supersonic flows in a wind tunnel with a forward-facing step, and (d) supersonic flows over a circular cylinder. It is demonstrated that the improved ghost-cell method can reach the accuracy of second order in L1 norm and higher than first order in L∞ norm. Direct comparisons against the cut-cell method demonstrate that the improved ghost-cell method is almost equally accurate with better efficiency for boundary representation in high-fidelity compressible flow simulations. Copyright © 2016 John Wiley & Sons, Ltd.en
dc.description.sponsorshipThe work reported in this study was supported by the King Abdullah University of Science and Technology (KAUST).en
dc.language.isoenen
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://doi.wiley.com/10.1002/fld.4262en
dc.rightsThis is the peer reviewed version of the following article: Chi, C., Lee, B. J., and Im, H. G. (2016) An improved ghost-cell immersed boundary method for compressible flow simulations. Int. J. Numer. Meth. Fluids, which has been published in final form at http://doi.wiley.com/10.1002/fld.4262. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.en
dc.titleAn improved ghost-cell immersed boundary method for compressible flow simulationsen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalInternational Journal for Numerical Methods in Fluidsen
dc.eprint.versionPost-printen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorChi, Chengen
kaust.authorLee, Bok Jiken
kaust.authorIm, Hong G.en
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