Table 9 Testing results and error.

From: Operating parameter optimization and experiment of spiral outer grooved wheel seed metering device based on discrete element method

NO.

Coefficient of variation

Flow rates

Testing value (%)

Simulation value (%)

Relative error (%)

Testing value (g/s)

Simulation value (g/s)

Relative error (%)

1

7.31

6.98

4.73

6.38

5.82

9.62

2

6.93

0.72

6.24

7.22

3

7.29

4.44

6.25

7.39

4

7.34

5.16

6.57

12.89

5

7.61

9.03

5.87

0.86

6

6.48

7.16

5.94

2.06

7

7.52

7.74

6.49

11.51

8

7.25

3.87

5.63

3.26

9

7.11

1.86

6.46

10.99

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