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Evaluation of OpenFOAM performance for RANS simulationsof flow around a NACA 4412 airfoil
KTH, School of Engineering Sciences (SCI).
KTH, School of Engineering Sciences (SCI).
2018 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Utvärdering av OpenFOAM prestanda för RANS simuleringarav flöde runt en NACA 4412 vingprofil (Swedish)
Abstract [en]

The purpose of this study is to evaluate how well the RANS models implemented in the open-source software OpenFOAM performs when simulating flow around a NACA 4412 airfoil with a turbulent boundary layer. After assessing the different models and performing several tests, the Spalart Allmaras model was chosen to be the best candidate for this airfoil.

The model was validated against several different references, including a flying-hot-wire study by Coles and Wadcock [5] for a chord based Reynolds number of 1.500.000, and a Direct Numerical Simulation (DNS) performed by Vinuesa et al. [18] at the Mechanics department at KTH for a Reynolds number of 400.000.

Abstract [sv]

Syftet med denna studie var att utvärdera prestandan hos de redan implementerade RANS-modellerna i programvaran OpenFOAM, vars källkod är öppen, i simuleringar av turbulent flöde runt ett NACA 4412 vingprofil. Efter en studie med en rad tester av de olika modellerna, valdes Spalart-Allmaras modellen som den bästa modellen för denna vingprofil. Denna modell kontrollerades mot en rad olika referenser, bland annat en så kallad flying-hot-wire studie av Coles och Wadcock [5] för ett kordbaserat Reynoldstal av 1.500.000. Validering gjordes även för ett Reynoldstal 400.000 mot en Direct Numerical Simulation (DNS) utförd av Vinuesa et al. [18] på institutionen för Mekanik vid KTH.

Place, publisher, year, edition, pages
2018. , p. 42
Series
TRITA-SCI-GRU ; 2018-177
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-231098OAI: oai:DiVA.org:kth-231098DiVA, id: diva2:1222399
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Available from: 2018-06-21 Created: 2018-06-21 Last updated: 2018-06-21Bibliographically approved

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