tube wave simulation
R N O P
600 0
3
7.5 1500 0 0 0 1 0
7.5 1400 0 0 0 1 0
9.5 1500 0 0 0 1 0
6
-.5 19.5 21
1e8 1e8
1 1 1 0
1024 0 1500 0.0001 0.0 0.0 1