forced dispersive waves in a narrow channel

7/28/2019 Forced Dispersive Waves in a Narrow Channel

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wavefr

equency(radiansp

ersecond)

22

20

18

16

14

12

10

8

6

4

2

m=9

m=

0

0 10 20 30 40

wavenumber (radians per meter)

50


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24

wavefr

equency(radiansp

ersecond) 22

20

18

16

14

12

10

8

6

4

2

m=9

m=0

0 10 20 30 40


50


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1.5

group

velocity(meterspe

rsecond)

1

0.5

0

m=0

m = 9

0 10 20 30 40 50



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1

group

velocity(meterspe

rsecond)

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

m=0

m = 9

0 10 20 30 40


50


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http://anim/wave_elevation_1st_mode_30m.avihttp://anim/wave_elevation_2nd_mode_bcutofl_30m.avihttp://anim/wave_elevation_2nd_mode_bcutofl_30m.avihttp://anim/wave_elevation_2nd_mode_bcutofl_30m.avihttp://anim/wave_elevation_1st_mode_30m.avihttp://anim/wave_elevation_1st_mode_30m.avi


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0.9

groupvelocity(meters

persecond)

Maximum group velocity for 1 st cosine mode

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

n=0 l

n = 9

Maximum group ve ocity for the 2ndcosine wave mode

0 10 20 30 40


50


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http://anim/wave_elevation_at_cutoff_1st_mode_30m.avihttp://anim/wave_elevation_5modes_30m.avihttp://anim/wave_elevation_5modes_30m.avihttp://anim/wave_elevation_5modes_30m.avihttp://anim/wave_elevation_at_cutoff_1st_mode_30m.avihttp://anim/wave_elevation_at_cutoff_1st_mode_30m.avi

forced dispersive waves in a narrow channel

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