Table 1 Structural parameters and measured air flow rates of the relay nozzles with elliptical holes.

From: An advanced CNN-attention model with IFTTA optimization for prediction air consumption of relay nozzles

Serial number

Inlet diameter D1 (mm)

Inlet diameter D2 (mm)

Long axis of elliptical hole A1 (mm)

Short axis of elliptical hole A2 (mm)

Conical degree \(\alpha\)(°)

Air flow

rate (L/min)

1

4.8

2.8

1.2

0.6

25

13.88

2

4.8

3.2

1.2

0.6

25

14.96

3

4.8

4.0

1.2

0.6

25

15.26

4

4.8

3.2

1.4

0.8

30

22.42

5

4.8

3.2

1.6

0.8

30

26.78

6

6.0

4.0

1.4

0.8

45

22.59

7

6.0

4.0

1.4

1.2

45

34.93

8

6.0

4.0

1.4

1.4

45

40.56

9

7.8

4.4

1.0

0.8

62

16.07

10

7.8

4.4

1.2

1.6

62

38.90

11

9.0

2.6

1.0

1.0

62

21.32

12

9.4

3.4

1.0

1.4

78

27.32

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