Lift & drag coefficient for NACA airfoil's for VAWT application
 

Dear All,

My PhD work is based on Vertical Axis Wind Turbine's (VAWT) for which I need tabulated (experimentally validated) lift and drag coefficients for NACA airfoil's corresponding to low Reynolds number of flow (typical of what is experienced by VAWT's).

I am currently referring to the report from Sandia National laboratories:

Robert E. Sheldahl, Paul C. Klimas.Aerodynamic Characteristics of Seven Symmetrical Airfoil Sections through 180-Degree Angle of Attack for Use in Aerodynamic Analysis of Vertical Axis Wind Turbines. Sandia National Laboratories energy report: SAND80-2114;1981

Is there a better reference than this ???. This documentation is very old (1981) and also contains data for only seven symmetrical airfoil’s. More importantly is there any correction to the values in the document (considering the time span that has elapsed)??.

Looking forward to responses,
Thanks in advance