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RE: Astronomical Boundary with Rising Sea Level

RW
Ryan Waldron, modified 5 Years ago.

Astronomical Boundary with Rising Sea Level

Youngling Posts: 16 Join Date: 8/5/14 Recent Posts
I am trying to model deltaic processes and have a model with 4 boundaries. One of the boundaries is the inflow boundary represented as a time series total discharge. The other three are an open bay that I would like to represent with tidal conditions and a rising sea level. I have astronomical constituents, and I was wondering if there were some way to add a rising water level to this. I appreciate your suggestions.
Richard Measures, modified 5 Years ago.

RE: Astronomical Boundary with Rising Sea Level

Jedi Knight Posts: 178 Join Date: 3/23/11 Recent Posts
Hi Ryan,

I'm not sure how to add a temporally varying sea level rise component (i.e. for a multi-decadal scale simulation?) but if you want to simulate separate scenarios with differing mean sea levels you can set a different A0 tidal constituent in your astronomic boundary for each scenario of different sea level rise. (The A0 constituent simply applies a constant vertical shift to your boundary.)

Does that help?

Cheers,
Richard
RW
Ryan Waldron, modified 5 Years ago.

RE: Astronomical Boundary with Rising Sea Level

Youngling Posts: 16 Join Date: 8/5/14 Recent Posts
Richard Measures:
Hi Ryan,

I'm not sure how to add a temporally varying sea level rise component (i.e. for a multi-decadal scale simulation?) but if you want to simulate separate scenarios with differing mean sea levels you can set a different A0 tidal constituent in your astronomic boundary for each scenario of different sea level rise. (The A0 constituent simply applies a constant vertical shift to your boundary.)

Does that help?

Cheers,
Richard


It is over a year with a MORFAC of 50, simulating 50 years of delta building.
Emiel Moerman, modified 5 Years ago.

RE: Astronomical Boundary with Rising Sea Level

Padawan Posts: 84 Join Date: 3/10/11 Recent Posts
Hi Ryan,

You can also apply a *bc0 file at the boundary. Check out Delft3D-FLOW manual appendix A.2.16.

Regards,

Emiel
RW
Ryan Waldron, modified 5 Years ago.

RE: Astronomical Boundary with Rising Sea Level

Youngling Posts: 16 Join Date: 8/5/14 Recent Posts
Emiel Moerman:
Hi Ryan,

You can also apply a *bc0 file at the boundary. Check out Delft3D-FLOW manual appendix A.2.16.

Regards,

Emiel


I thought that was a correction to a Time series boundary, not to an astronomical one? I'm not sure that the manual makes it clear how to do that?
Emiel Moerman, modified 5 Years ago.

RE: Astronomical Boundary with Rising Sea Level

Padawan Posts: 84 Join Date: 3/10/11 Recent Posts
Sorry I was a little unclear, you can use the additional keyword/value pair:

Filbc0= #filename.bc0#

To add a time-series in addition to a bca file. A time-series of surge for example.

Content of *.bc0 file will be something like:

table-name 'Boundary Section : 1'
contents 'Uniform'
location 'North boundary 0'
time-function 'non-equidistant'
reference-time 20011228
time-unit 'minutes'
interpolation 'linear'
parameter 'time' unit '[min]'
parameter 'water elevation (z) end A' unit '[m]'
parameter 'water elevation (z) end B' unit '[m]'
records-in-table 8857
0.0000000e+000 0.0000000e+000 0.0000000e+000
6.0000000e+001 0.0000000e+000 0.0000000e+000
1.2000000e+002 0.0000000e+000 0.0000000e+000
......
.....



Regards,

Emiel
RW
Ryan Waldron, modified 5 Years ago.

RE: Astronomical Boundary with Rising Sea Level

Youngling Posts: 16 Join Date: 8/5/14 Recent Posts
Thanks,

Where do I place the "additional keyword/value pair" to reference this? Does it go in the .mdf or in one of the boundary condition files?
Emiel Moerman, modified 5 Years ago.

RE: Astronomical Boundary with Rising Sea Level

Padawan Posts: 84 Join Date: 3/10/11 Recent Posts
Ryan,

You need to do this in the "Additional parameters" section of the *.mdf, or in the GUI.

Regards,

Emiel
RW
Ryan Waldron, modified 5 Years ago.

RE: Astronomical Boundary with Rising Sea Level

Youngling Posts: 16 Join Date: 8/5/14 Recent Posts
Thanks!, it looks like it worked perfectly.
JA
Jakia Akter, modified 2 Years ago.

RE: Astronomical Boundary with Rising Sea Level

Youngling Posts: 10 Join Date: 4/6/14 Recent Posts

Hi,

Is this method also applicable if I am using harmonic water level boundary? I tried to follow your instruction but received an error message as shown below:

....................................................................

Corrective boundary conditions file     : 1.bc0
Boundary name                           :                 Sea
  Correction                            :(end A,end B) linear
*** ERROR Expected 'water elevation (z)  end A' but found 'water elevation (z) end A' for location 'Sea' in 1.bc0 
*** ERROR Flow exited abnormally 

..........................................................

Do you have some suggestions for my case?

Thanks in advance

Jakia 
 

CG
Camille Grimaldi, modified 1 Year ago.

RE: Astronomical Boundary with Rising Sea Level

Youngling Posts: 3 Join Date: 5/28/18 Recent Posts
Hi all,
Is this also possible in Delft3D FM?
All the best,Camille