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Using adaptive mesh refinement to simulate turbulent wings at high Reynolds numbers
KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW. KTH, School of Engineering Sciences (SCI), Mechanics.
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW. KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0002-7448-3290
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2019 (English)In: 11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019, International Symposium on Turbulence and Shear Flow Phenomena, TSFP , 2019Conference paper, Published paper (Refereed)
Abstract [en]

The implementation of adaptive mesh refinement (AMR) in Nek5000 is used for the first time on the simulation of the flow over wings. This is done by simulating the flow over a NACA4412 profile with 5° angle of attack at chord-based Reynolds number 200,000. The mesh is progressively refined by means of AMR which allows for high resolution near the wall whereas significantly larger elements are used in the far-field. The resultant mesh shows higher resolution than previous conformal meshes, and it allows for larger computational domains, which avoid the use of RANS to determine the boundary condition, all of this with, approximately, 3 times lower total number of grid points. The results of the turbulence statistics show a good agreement with the ones obtained with the conformal mesh. Finally, using AMR on wings leads to simulations at higher Reynolds numbers (i.e. Rec = 850,000) in order to analyse the effect of adverse pressure gradients at high Reynolds numbers.

Place, publisher, year, edition, pages
International Symposium on Turbulence and Shear Flow Phenomena, TSFP , 2019.
Keywords [en]
Angle of attack, Conformal mapping, Mesh generation, Numerical analysis, Reynolds number, Turbulence, Adaptive mesh refinement, Adverse pressure gradient, Chord-based Reynolds number, Computational domains, High Reynolds number, Higher resolution, Number of Grids, Turbulence statistics, Shear flow
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-268608Scopus ID: 2-s2.0-85073607980OAI: oai:DiVA.org:kth-268608DiVA, id: diva2:1428255
Conference
11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019, 30 July 2019 through 2 August 2019
Funder
Knut and Alice Wallenberg Foundation, 671571
Note

QC 20200505

Available from: 2020-05-05 Created: 2020-05-05 Last updated: 2020-05-05Bibliographically approved

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Tanarro, AlvaroMallor, FerminOffermans, NicolasPeplinski, AdamVinuesa, RicardoSchlatter, Philipp

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