Documents relatifs
• Many students could not use the linear momentum governing equation correctly, and missed inlet mass flow rate to calculate Force. • Some of students used wrong sign at inlet
• Most student solved linear momentum and continuity equation parts correctly.. • Some of students made minor mistakes to get velocity at
• Once student could not integrate the simplified governing equation correctly. • Some of students made small mistake when they use the
• Some of students calculated Reynold number incorrectly, so derived wrong ‘f’.. • Several students derived somewhat low ‘f’ value from
• Few students did not apply the continuity equation first; this, in some cases, resulted in errors in simplifying the
Some used conservation of volume flow rate (ignoring the change in density), some applied Bernoulli equation. • 30% of students did not consider the fuel flow rate in the
• 97.56% of students did not solve the angular momentum equation including the relative motion term (- Rω) in order to determine the rotation rate if there is no
• Some students did calculation mistakes in deriving the velocity component from the potential function.. • Some students did not solve at all the second part of