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RE: Submerged Breakwater in Xbeach

BW
Baoxing Wang, modified 4 Years ago.

Submerged Breakwater in Xbeach

Capillary Posts: 3 Join Date: 9/10/15 Recent Posts
Dear all,

I set up a submerged breakwater for the beach profile modelling. The submerged breakwater was configured using the hard layer option.
I found that no erosion occurred over the breakwater as we expected, but there is still significant sediment transport over the crest of submerged breakwater even the bed level in the surrounding area is much lower than the breakwater crest level. Does it mean that the hard layer only stops erosion, but accretion can still occur? How can I completely block the sediment movement cross the submerged breakwater?

Regards,

Baoxing Wang
Arnold van Rooijen, modified 3 Years ago.

RE: Submerged Breakwater in Xbeach

Swell Posts: 239 Join Date: 11/7/11 Recent Posts
Hi Baoxing,

If you use the hard layer it will just limit sediment supply, so yes you can still get accretion. The only way to prevent this is to make your structure much higher than the surrounding bathymetry (e.g. emergent).

Cheers
Arnold