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Jose Maria

ADCIRC Current in estuaries

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Dear Colleagues:

Is possible in ADCIRC to set boundary conditions both on tides (ocean) and on current (river, just on the other side of the mesh)?

Cheers,

Jose

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Jose,

It is possible to model an inflow boundary (river) using the "Normal Flow" boundary condition. You must provide to ADCIRC values for each node along the inflow boundary. We have a tool to try make this process easier, (using a hydrograph - which makes its own set of assumptions) but it is admittedly more difficult than other models. A description of the input file is found here: http://www.adcirc.org/documentv47/fort_20.html

To use the automated extraction tool in SMS, be sure you provide a reference WSE which must be higher than the nodal elevation. Also, because of the assumptions we make in the extraction, move the boundary away from the area of interest by extending the river.

- John

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Thanks, John, but can I use tides in one boundary and inflow in other boundary simultaneously?

Jose

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Jose,

Yes, you can use multiple boundary conditions at once. I would recommend you take a look at the Glacier Bay example that David Foster Hill put together. He didn't use SMS to generate the files, but he has a report posted describing the process of putting the model together, input files posted, etc. It is a great report and is available here:

http://water.engr.psu.edu/hill/research/glba/default.stm

Using the LTEA toolbox to generate a mesh of Glacier Bay (special changes required for two ocean boundaries)

http://www.xmswiki.com/xms/SMS:LTEA

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