1. • P.Sarathkumar Reddy 22208101029
Mr. G. RAJU Asst.Prof.

2. INTRODUCTION OF THE
PROJECT
• This Project aims to undertake aerodynamic analysis of a
Horizontal Axis Wind Turbine
• Computational Fluid Dynamics (CFD) software is used to
compare the performance of different Wind Turbine Blade
Profile
• A steady state, incompressible flow solver for Multiple
Reference Frames (MRF)

3. OBJECTIVE
FIRST-CUT ANALYSIS
• Flow optimization in different blade sections, with different Angle of
Attack (α)
• Geometry of the standard NACA-9417 Airfoil
• MH-102 from -Illinois University
• SC 02-0714 - Airfoil Investigation Website
SECOND-CUT ANALYSIS
• Flow optimization in a blade with a add-on part which gives better result
• Winglet
FINALANALYSIS
• Flow of air over a rotating wind turbine rotor implies that the fluid flows
in an inertial frame of reference while the rotor rotates in a non inertial
reference frame

4. BLADES WITH DIFFERENT
AIRFOILS
NACA-9417
SC-02 0714
MH-102

5. DIMENSIONS OF THE BLADE

6. TOTAL VIEW OF BLADES
NACA-9417
SC-02 0714
MH-102

7. BLADE WITH SURFACE MESH
MESH
REFINEMENT

8. PRISM LAYER SETTING IN T-GRID

9. BLADE WITH FLUID VOLUME

11. MESH DETAILS

12. BLADE INSIDE THE TUNNEL

13. BOUNDARY CONDITIONS SETTING

14. CONVERGED SOLUTION

15. STATIC PRESSURE CONTRIBUTION
OVER THE BLADES

16. NACA 9417

17. MH-102

18. SC-02 0714

19. VELOCITY CONTRIBUTION
OVER A BLADE

20. NACA 9417

21. VECTOR PLOT AROUND THE BLADE

22. LIFT AND DRAG VALUES FOR
THREE BLADES WITH DIFFERENT
ANGLE OF ATTACK-α

23. COMPARISION GRAPHS
Coefficient of Drag CD Vs alpha-α

24. Coefficient of lift Vs alpha-α

25. L/D RATIO Vs ALPHA -α

26. Add-on part(winglet)
• After completion of first cut analysis, we
finalized NACA-9417 at 10 degree angle of
attack is giving the better results
• The blade which we got the better result , in
that the add-on part(winglet) will be
implemented and the second cut analysis starts
in that configuration

27. CAD MODEL OF NACA-9417 BLADE
WITH WINGLET

28. Winglet Details
Cant angle -70degree
Height-17mm

29. MESHED MODEL OF NACA-9417 BLADE
WITH WINGLET

30. MESHED WINGLET

31. PRISM LAYER SETTING IN T-GRID

32. BLADE WITH WINGLET IN THE FLUID
VOLUME

34. MESH DETAILS

35. WINGLET ASSEMBLY WITH TUNNEL

36. BOUNDARY CONDITION SETTING

37. CONVERGED SOLUTION

38. STATIC-PRESSURE CONTOUR

39. VELOCITY VECTOR CONTOUR

40. COMPARISION OF LIFT WITH WINGLET

41. COMPARISION OF DRAG WITH WINGLET

42. GENERATOR ASSEMBLY

43. THREE BLADE ASSEMBLY

45. MESHED GENERATOR

46. THREE VIEW OF TOTALASSEMBLY
Front view
Top view
Side view

47. TOTALASSEMBLY WITH REAR PLATE

49. MRF-CAPSULE

51. MRF-capsule inside a volume tunnel

54. CONVERGED SOLUT

55. Static pressure contour across total assembly

56. Static pressure across the blades

57. Static pressure across the generator

58. Velocity contour across the blades

59. Velocity vectors in the whole tunnel

60. VECTOR PLOT ACROSS HUB

61. VECTORS AROUND THE WINGLET

62. Dynamic pressure contour

67. Turbulence contour across generator

68. CONCLUTION
• A growing number of researchers is using CFD to
study wind-turbine wake aerodynamics
• More research on the effect of stratification on power
production is to be expected
• Aerodynamics turbulence is a dominating factor,
affecting the blade performance and Wake behaviour
so we tried to reduce this factor in this analysis

69. REFERENCES
• H. Piggott. (2010, Scoraig Wind. Available: www.scoraigwind.com
• K. Kishinami, et al., "Theoretical and Experimental Study on the
Aerodynamic Characteristic of a Horizontal Axis Wind Turbine," Elsevier,
2005.
• Anderson, J.D. Computational Fluid Dynamics: The Basics with
Applications.McGraw-Hill, New York, NY, USA, 1995.
• Gupta, A. Computational Fluid Dynamic Simulation of Wind Turbines.
Master’s thesis, The Pennsylvania State University, 2006.
• Somers, Dan M., and Tangler, J. Design and Experimental Results for the
S809
• Airfoil. National Renewable Energy Laboratory (NREL) (1997).
• R. E. a. K. Sheldahl, P. C., "Aerodynamic Characteristics of Seven Airfoil
Sections Through 180 Degrees Angle of Attack for Use in Aerodynamic
Analysis of Vertical Axis Wind Turbines, "Sandia National Laborotories,
Albuquerque, New Mexico, USA1981.