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Sensitivity Analysis of Near-Wall Turbulence Modeling for Large Eddy Simulation of Incompressible Flows
KTH, School of Engineering Sciences (SCI), Mathematics (Dept.), Numerical Analysis, NA.
2014 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Känslighetsanalys av modellering av väggnära turbulens för Large Eddy Simulering av inkompressibla flöden (Swedish)
Abstract [en]

Wall layer models are very important for the simulation of turbulent flows in complex geometries to characterize the significant flow features. For the simulation of turbulent flows, the performance of Large Eddy Simulation techniques with different wall layer models which we refer to as near-wall turbulence modeling for turbulent flows are analyzed. The wall shear stress model and Delayed Detached Eddy Simulation wall model are two options, that can be used to model the turbulent boundary layer. In this project, a wall shear stress model is used as a near-wall turbulence model in the G2 simulation technique. A sensitivity analysis of this near-wall turbulence modeling with respect to model parameters in the simulation techniques of incompressible turbulent flows is presented.


Abstract [sv]

Väggmodellering är viktigt i simuleringar av turbulenta flöden ikomplexa geometrier då de mest inverkande flödesegenskaperna skakarakteriseras. Prestandan hos Large Eddy Simulation-tekniker med olikaväggmodeller analyseras för simuleringar av turbulenta flöden med höga Reynoldstal.Två alternativ som kan användas för turbulenta gränsskikt är “Wall Shear StressModel” och “Delayed Detached Eddy Simulation Wall Model”. I detta projektanvänds en wall shear stress modell för det turbulenta flödet vid väggentillsammans med G2 simuleringsmetodiken. En känslighetsanalys av denna modellmed hänsyn till modellparameterar presenteras för simuleringar avinkompressibla turbulenta flöden

Place, publisher, year, edition, pages
TRITA-MAT-E, 2014:33
National Category
Computational Mathematics
URN: urn:nbn:se:kth:diva-146098OAI: diva2:722296
Subject / course
Scientific Computing
Educational program
Master of Science - Computer Simulation for Science and Engineering
Available from: 2014-06-06 Created: 2014-06-06 Last updated: 2014-06-06Bibliographically approved

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