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Gearbox efficiency in rotor dynamics equation defined incorrectly #21

Open spmulders opened 6 years ago

spmulders commented 6 years ago

I think that the gearbox efficiency in the horizontalAxisWindTurbinesADM.C (Line 869) is defined incorrectly. Writing out the equation from this line (in continuous time) leads to:

J_r\dot{\omega}_r = \eta_gT_r\rho - GT_g

by doing the derivation myself, I would think that the gearbox efficiency should be at the generator side, like this:

J_r\dot{\omega}_r = T_r\rho - G*T_g/\eta_g

Do you agree? Or am I missing something?