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Navier-Stokes Modeling for HAWT by CFX 5.7

Chapter 2. Navier-Stokes Modeling for HAWT by CFX 5.7. Rotor Geometry. FIL-1000. 1. Diameter : 54.5 m. 2. Rated Power : 1MW (Design wind speed – 10 m/s). 3. TSR : 7.5 (Design point). 4. Rotating Speed : 26.28 rpm. 5. Power Control Type : Stall regulated.

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Navier-Stokes Modeling for HAWT by CFX 5.7

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  1. Chapter 2 Navier-Stokes Modeling for HAWT by CFX 5.7

  2. Rotor Geometry FIL-1000 1. Diameter : 54.5 m 2. Rated Power : 1MW (Design wind speed – 10 m/s) 3. TSR : 7.5 (Design point) 4. Rotating Speed : 26.28 rpm 5. Power Control Type : Stall regulated 6. Airfoil Sections : NACA 63415, NACA 63418, DU-Series, FFA Series (From Tip to Hub)

  3. Details of Specification ROOT TIP

  4. Geometry Modeling

  5. Computational Mesh • Mesh Generation : ICEM-CFD 5.0 • Mesh Type : Unstructured Hexa • 480,000 nodes

  6. Computational Mesh • Chord length : 175 nodes • Radial direction : 40 nodes • O-GRID

  7. Computational Mesh • Chord length : 175 nodes • Hybrid-Mesh : Casing (Tetra-Prism) • 220,000 nodes

  8. Turbulence Modeling # K-W SST Model with High Resolution • Accounts for the transport of the turbulence shear stress and gives • very highly accurate predictions of the onset and the amount of • flow separation under adverse pressure gradients • Improve the accuracy for the predictions of the flow separation from • a smooth surface : Important phenomenon in many industrial fields, • particularly for airplane industries • The most prominent two equation model Ref.: Menter, F.R.., “Two equation eddy-viscosty turbulence models for engineering applications” AIAA Journal, 32(8), 1994

  9. Calculation Conditions

  10. Boundary Conditions • Inflow (Normal velocity) • Rotating Frame + Stationary Frame • Periodic surfaces(GGI) • Frame change model : Frozen rotor Interface with rotor and casing • Outflow (Static Pressure)

  11. Results TSR : 3 TSR : 7.5 TSR : 10 Surface Pressure Distribution on the Suction Side

  12. Results TSR : 3 TSR : 7.5 TSR : 10 Surface Streamline on the Suction Side

  13. Results TSR : 3 TSR : 7.5 TSR : 10 Sliced Streamline – 5m from Root

  14. Results TSR : 3 TSR : 7.5 TSR : 10 Sliced Streamline – 10m from Root

  15. Results TSR : 3 TSR : 7.5 TSR : 10 Sliced Streamline – 15m from Root

  16. Results TSR : 3 TSR : 7.5 TSR : 10 Sliced Streamline – 20m from Root

  17. Results

  18. Future Works 수행완료 진행 예정

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