Quiz 4 Report 9/30/2020

• Some of students calculated Reynold number incorrectly, so derived wrong ‘f’.. • Several students derived somewhat low ‘f’ value from

• One student confused the unit between ‘mm’ and ‘cm’ when he tried to find the drag coefficient, so used wrong drag coefficient. • Some of student made mistake when

 The Drag Force should be calculated by multiplying the surface area and the Pressure, but one student divided the pressure by the area to

• Several students indicated wrong sign for pressure term in Bernoulli's equation.. • One student indicated wrong sign for

• One student confused the Model scale density with full scale density.. • Some of students made small

• Few students did not evaluate the shear stress at correct location

[r]

• Some students selected inlet and outlet to apply the Bernoulli equation. Selecting reservoir surface and outlet