A New Wall Model for Large Eddy Simulation of Separated Flows
Abstract
:1. Introduction
2. Governing Equations
3. Wall Layer Model for Body Fitted Geometry
3.1. Model Optimization for Body Fitted Geometry
3.2. Application of the Wall Layer Model for Body Fitted Geometry
4. Wall Layer Model for Immersed Boundary Methodology (IBM)
4.1. Calibration of the Wall Layer Model with IBM
4.2. Flow Simulation over a Single Hill Using IBM
4.3. Flow Simulation over 2D Periodic Hills
5. Summary and Conclusions
Funding
Acknowledgments
Conflicts of Interest
References
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Case | IB Surface Position | ||
---|---|---|---|
1 | just above centroid | 101 | 0.8883 |
2 | between centroid and grid line | 82 | 0.8816 |
3 | just above grid line | 43.5 | 0.8541 |
4 | overlapping grid line | 50 | 0.8393 |
5 | just below centroid | 5 | 1.2740 |
Case | Coefficient () | ||
---|---|---|---|
1 | 0.93318 | 1.13 | 0.9987 |
2 | 0.74818 | 1.20 | 1.0043 |
3 | 0.38909 | 1.47 | 0.9966 |
4 | 0.5 | 1.3 | 0.9974 |
5 | 0.04386 | 3.4 | 0.9942 |
Case | Resolution | ||
---|---|---|---|
Resolved LES (Fröhlich et al.) | |||
IBM Cartesian () | |||
IBM curvilinear () | |||
WMLES (TBLE/LES at ) | |||
WMLES (TBLE/LES at ) |
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Fakhari, A. A New Wall Model for Large Eddy Simulation of Separated Flows. Fluids 2019, 4, 197. https://doi.org/10.3390/fluids4040197
Fakhari A. A New Wall Model for Large Eddy Simulation of Separated Flows. Fluids. 2019; 4(4):197. https://doi.org/10.3390/fluids4040197
Chicago/Turabian StyleFakhari, Ahmad. 2019. "A New Wall Model for Large Eddy Simulation of Separated Flows" Fluids 4, no. 4: 197. https://doi.org/10.3390/fluids4040197