Table 1 Error norm ||L ₂|| at some selected time steps for solving KiSS Eq. (34)

ETDM4

1/32

0.2150

1/64

0.0301

1/256

3.3910e−004

1/1024

3.4784e−006

ETDM5

1/32

0.2170

1/64

0.0195

1/256

1.7793e−005

1/1024

1.7923e−006

ETDM6

1/32

0.0664

1/64

8.5299e−004

1/256

4.2840e−004

1/1024

1.8248e−007

ETDADAMS4

1/32

0.0050

1/64

0.0028

1/256

1.3334e−004

1/1024

2.3963e−006

ETDRK4

1/32

7.2013e−004

1/64

5.0921e−005

1/256

3.5038e−007

1/1024

4.4086e−009