Previous: Wind Turbine Efficiency Up: Formulas for the Efficiency Next: Stator Efficiency _{This is an automatically generated documentation by LaTeX2HTML utility. In case of any issue, please, contact us at info@cfdsupport.com.} Propeller Efficiency There are two quantities of interest for propeller:Thrust – [N]Torque – [Nm]In case of propeller, reference pressure is not taken into account when evaluating thrust and torque.Dimensional analysis leads to a definition of propeller coefficients representing its performance. ^{8.1}Torque coefficient ():(8.9) Thrust coefficient ():(8.10) where is the propeller speed [rev/s] and denotes the propeller diamater [m].The efficiency can be evaluated using the supplied power to the propeller ( ) and the useful power output ( ):(8.11)where is the advance ratio and is given as the distance advanced by the propeller in one revolution divided by the propeller diameter, i.e., . Previous: Wind Turbine Efficiency Up: Formulas for the Efficiency Next: Stator Efficiency OpenFOAM Training by CFD Support, CFD SUPPORT, info@cfdsupport.com +420 212 243 883 © CFD support, s.r.o., Sokolovská 270/201, 190 00 Praha 9, Czech Republic