MIKE 21/3 Integrated Model

Hi,

I am working on a MIKE 21 FM coupled model (ST-SW) to compute the annual bed level change along the Beach and feeding the model with annual wave data as input .

The direction of wave driven currents are making sense to me, however, the sediment transport pattern is simulated to be governed by accretion, though the observed sediment drift is erosive.

I have tried multiple trials with varying Bed friction and directional spreading index but couldn't get the bed level change to perform as required. The beach line continues to show accretion.

Any help or advice on this would be highly appreciated .

Hi ketaki27,

Does the current speed look OK to you? It could be that the current is too slow to cause erosion and accretion takes place instead.
If that looks okay, then it might be the sediment data that needs to be checked.

Best regards,
Ricardo Machado