Table 1 Coordinates of the numerical extracted profile lines to access localized flow inside the channel.

From: Airfoil-shaped filament feed spacer for improved filtration performance in water treatment

Profile lines

Airfoil spacers

Commercial spacer

X (mm)

Y (mm)

Z (mm)

X (mm)

Y (mm)

Z (mm)

L1

0–20

0.6

6

0–20

0.6

3.66

L2

0–20

0.05

4

0–20

0.05

2.56

L3

0–20

0.6

2

0–20

0.6

1.21

L4

0–20

0.05

2

0–20

0.05

1.21

L5

8.5

0–1.2

2

10.35

0–1.2

2.56

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