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XBeach NH simulation shows drop in water level within model domain

SV
Sathish Vinayagam, modified 2 Months ago.

XBeach NH simulation shows drop in water level within model domain

Capillary Posts: 3 Join Date: 1/29/15 Recent Posts

I have setup XBeach NH model with a high resolution variable model grid varying from 0.5m to 1.2m. The duration of model simulation is 20 minutes and the simulations completes without any error. However analysis of simulated the result show there is drop in water level as the simulation progresses. 

Model was setup with constant water level and the offshore boundary was imposed  by  JONSWAP spectrum random wave time-series.

I am attaching the model files and grid for review.

I appreciate suggestions and possible solutions from the forum members who may have noticed this problem in the XBeach NH simulations.

Thank you in Advanced 

 

With Regards

 

Sathish Kumar

 

SV
Sathish Vinayagam, modified 2 Months ago.

RE: XBeach NH simulation shows drop in water level within model domain

Capillary Posts: 3 Join Date: 1/29/15 Recent Posts

Thank you everyone.

 

The drop in water level was cause by boundary condition which was defines as abs2d. The boundary has to be defined as nonh_1d for non-hydrostatic simulations. Changing boundary resolved the issue.