Physical insight into the accuracy of finely-resolved iLES in turbulent boundary layers

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper investigates the numerical accuracy of implicit Large Eddy Simulations (iLES) in relation to compressible turbulent boundary layers (TBL). iLES are conducted in conjunction with Monotonic Upstream-Centred Scheme for Conservation Laws (MUSCL) and Weighted Essentially Non-Oscillatory (WENO), ranging from 2nd to 9th-order. The accuracy effects are presented from a physical perspective showing skewness, flatness and anisotropy calculations, among others. The order of the scheme directly affects the physical representation of the TBL, especially the degree of asymmetry and anisotropy in the sub-layers of the TBL. The study concludes that high-order iLES can provide an accurate and detailed description of TBL directly comparable to available DNS and experimental results.
LanguageEnglish
Pages309-316
Number of pages8
JournalComputers and Fluids
Volume169
Early online date20 Jul 2017
DOIs
Publication statusPublished - 30 Jun 2018

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Large eddy simulation
Boundary layers
Anisotropy
Conservation

Keywords

  • iLES
  • high-order
  • TBL
  • supersonic

Cite this

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title = "Physical insight into the accuracy of finely-resolved iLES in turbulent boundary layers",
abstract = "This paper investigates the numerical accuracy of implicit Large Eddy Simulations (iLES) in relation to compressible turbulent boundary layers (TBL). iLES are conducted in conjunction with Monotonic Upstream-Centred Scheme for Conservation Laws (MUSCL) and Weighted Essentially Non-Oscillatory (WENO), ranging from 2nd to 9th-order. The accuracy effects are presented from a physical perspective showing skewness, flatness and anisotropy calculations, among others. The order of the scheme directly affects the physical representation of the TBL, especially the degree of asymmetry and anisotropy in the sub-layers of the TBL. The study concludes that high-order iLES can provide an accurate and detailed description of TBL directly comparable to available DNS and experimental results.",
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author = "Konstantinos Ritos and Kokkinakis, {Ioannis W.} and Dimitris Drikakis",
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Physical insight into the accuracy of finely-resolved iLES in turbulent boundary layers. / Ritos, Konstantinos; Kokkinakis, Ioannis W.; Drikakis, Dimitris.

In: Computers and Fluids, Vol. 169, 30.06.2018, p. 309-316.

Research output: Contribution to journalArticle

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AU - Ritos, Konstantinos

AU - Kokkinakis, Ioannis W.

AU - Drikakis, Dimitris

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AB - This paper investigates the numerical accuracy of implicit Large Eddy Simulations (iLES) in relation to compressible turbulent boundary layers (TBL). iLES are conducted in conjunction with Monotonic Upstream-Centred Scheme for Conservation Laws (MUSCL) and Weighted Essentially Non-Oscillatory (WENO), ranging from 2nd to 9th-order. The accuracy effects are presented from a physical perspective showing skewness, flatness and anisotropy calculations, among others. The order of the scheme directly affects the physical representation of the TBL, especially the degree of asymmetry and anisotropy in the sub-layers of the TBL. The study concludes that high-order iLES can provide an accurate and detailed description of TBL directly comparable to available DNS and experimental results.

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