C D 2tt 



at 



Figure 6. Nonlinear distortion, impellor meter. 



e =--—WjA + C-B + 2TT-D)+Ur(C-B-A-2TT + D)+UJeos B-cosC-cos A + cosDi] (6) 



To find the mean velocity, u, corresponding to the value of e, a formula 

 similai- to equation (1) would be used. Solving for 17 



e + R'Uj 

 K 



(7) 



This would be the mean output of the real meter. It can then be compared with the 

 velocity Uq. Although detailed curves are hard to plot because of the discontinuous 

 nature of the output cui've, a few values were calculated (Uj, = 4 cm/sec; Uq from 



13 



