wave growth in kelvin wave test case

[sankaras]

Hello,

I tried running the default Kelvin wave test case for 10 days and the results show a growth in free surface amplitudes, starting from the eastern boundary. I am using the default boundary options that came with kelvin.h.

#define RADIATION_2D
#define EAST_FSRADIATION
#define EAST_M2RADIATION
#define EAST_M3RADIATION
#define EAST_TRADIATION
#define WEST_FSCHAPMAN
#define WEST_M2FLATHER
#undef WEST_FSCLAMPED
#undef WEST_M2CLAMPED
#define WEST_M3RADIATION
#define WEST_TRADIATION

The attachments show 10-day time series of surface elevations and velocity at the four corners. Any comments will be highly appreciated.

Thanks,

Sankar

velocity.pdf

(51.86 KiB) Downloaded 206 times

[mlicer]

hi, i get the same free surface drift - including a ripple reflected from the upper right corner, see pic below. so i guess this weird behaviour really is in the test case. anyway, i find it comforting to hear it's been noticed by other users as well..