TELEMAC-MASCARET Forum: Time varying bounday condition (1/1)

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TOPIC: Time varying bounday condition

Time varying bounday condition 8 years 9 months ago #19885

alexwbi	Hi all, I'm hoping to run a simulation with a time-varying boundary condition to represent a tide rising and falling. I have been using Bluekenue and Fudaa as pre-processors, but have not been able to set a changing boundary condition. Do you have any suggestions, or has this issue come up in the past? Any help would be much appreciated! Regards, Alex
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Time varying bounday condition 8 years 9 months ago #19886

riadh	Hello Tide can be handled automatically by Telemac-2D using several keywords. Time-varying boundary condition is also possible with Telemac, although it is not prepared with pre-processing tools. These two aspects are well explained in the user manual that you can find here. with my best regards Riadh ATA
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Time varying bounday condition 8 years 8 months ago #19943

huyquangtran OFFLINE Expert Boarder Posts: 271 Thank you received: 23	Hi Alex, You also can find something useful by looking at some examples in TELEMAC (examples directory, e.g: C:\opentelemac-mascaret\v7p0\examples\telemac2d\tide\t2d_tide-jmj_type_gen.cas), so you can understand more how to set up boundary conditions with your case. Hope this helps Best Regards Huy
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Time varying bounday condition 8 years 8 months ago #19985

alexwbi	Hi Riadh and Huy, Thank you both for your help! Best, Alex
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Time varying bounday condition 8 years 8 months ago #19998

alexwbi	Sorry to bother you again but I have a quick follow-up: would it be equivalent if I set a tide versus created a liquid boundary file that described the height (SL) of the open boundary moving up and down with the motion of a tide? I am using the liquid boundary approach, and just want to make sure that I am simulating the right conditions. Thanks!
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Time varying bounday condition 8 years 8 months ago #19999

huyquangtran
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Expert Boarder
Posts: 271
Thank you received: 23

When you create a mesh with Blue Kenue, a default boundary condition is solid. If you want to change boundary condition in a specified location, you just double-click on first point, then hold a Shift-key, double-click on the end-point, right-click on the mouse and select an select Add Boundary Segment..

To activate boundary conditions, there is one key word: OPTION FOR LIQUID BOUNDARIES (p.44-reference manual) you have to list in your steering file. If you select option 2 by Thompson, this option is usual for coastal domains (well described in User Manual Telemac 2D p.37).

Also with tide, you use a keyword: OPTION FOR TIDAL BOUNDARY CONDITIONS (p.38 Use Manual, p.46-Reference Manual), also a keyword: TIDAL DATA BASE...

Telemac can automatically read TIDAL DATA BASE (e.g TPXO). In your model, you have to specify your location in order to get right data.

Hope what I explained above helps you.

Best Regards

Huy

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