Table 4 Fitted parameters and goodness of fit indicators for the Power-law velocity profile model for both PVC90 and PVC63 untreated pipes.

From: Application of a hydrophobic coating to a pressurized pipe and its effect on energy losses and fluid flow profile

 

Pitot tube

MAE

RMSE

(m/s)

%

(m/s)

%

PVC90

1

0.007

1.39

0.008

1.06

2

0.009

1.71

0.018

2.19

3

0.013

2.11

0.015

1.60

4

0.008

1.23

0.018

1.92

5

0.005

0.83

0.014

1.53

6

0.007

1.08

0.027

2.72

7

0.006

0.91

0.008

1.06

8

0.012

1.63

0.018

2.19

9

0.010

1.39

0.015

1.60

PVC63

1

0.006

0.85

0.008

1.74

2

0.015

1.75

0.011

2.01

3

0.012

1.30

0.015

2.51

4

0.017

1.74

0.009

1.50

5

0.011

1.21

0.007

1.14

6

0.022

2.26

0.010

1.41

Back to article page