I have some question regarding the AeroSubs.f90 module:

1) lines 1801 - 1802:

Code: Select all

`O%ElOut%CNN ( O%ElOut%ElPrList(J) ) = CLA * COS(O%Element%ALPHA(J,IBlade)) + CDA * SIN(O%Element%ALPHA(J,IBlade))`

O%ElOut%CTT ( O%ElOut%ElPrList(J) ) =-CDA * COS(O%Element%ALPHA(J,IBlade)) + CLA * SIN(O%Element%ALPHA(J,IBlade))

Why the angle-of-attack (ALPHA) is used here instead of the PHI angle in the above formulas for the normal and tangential force coefficients?

2) Is the tangential velocity component corrected twice with the tangential induction factor ( 1. + A2P ) in lines 1986 and 2090?

Best regards,

Koen