Welcome, Guest
Username: Password: Remember me
Forgot your password? Forgot your username? Create an account
Forum
System Modules
GAIA / SISYPHE
Setting up the ESTRATUM values
Flat Threaded

TOPIC: Setting up the ESTRATUM values

Setting up the ESTRATUM values 3 months 2 weeks ago #45520

  • manojkg
  • manojkg's Avatar
  • OFFLINE
  • Fresh Boarder
  • Posts: 5
  • Thank you received: 2
I am working on a tide flow driven river system where I do not have credible information to setup the thickness of erodible boundary. Could someone from the forum point me in the right direction please?

This is a coupled TELEMAC2D, GAIA system. I am using the user_bed_init.f to specify the thickness.
  1. Run a loop from 1 to number of nodes and specify:
  2. ESTRATUM(1,IPOIN) = 10.0D0 [arbitrary value]

Adding to this, the thickness is only applied to region of the model where erosion is applied (by specifying the erodible/nonerodible flags in the .slf file.

Issue:
Within the first 2-3 hours I see that some part of the bottom is eroding to 10.0m. The velocity range during the period is between 0-1.8 m/s and the region eroding had an initial bed elevation of -18.0 m.

When I change the erodible region to the whole model domain, I do not see erosion at the same spot. Makes me question the results I observe.
Questions:
  1. Is there a systematic procedure to calibrate and set the thickness of erodible layer?
  2. Is value I am observing physically possible?
The sediment class being used is as follows:
CLASSES TYPE OF SEDIMENT    = NCO;NCO;NCO;CO;CO
CLASSES SEDIMENT DIAMETERS  = 0.002;0.0002;0.00008;0.00002;0.000002
Sediment sources
There are three fluid boundaries and sediment flux across the boundary at this point is assumed to be zero
The administrator has disabled public write access.
Flat Threaded
Moderators: Pablo, pavans
Forum
System Modules
GAIA / SISYPHE
Setting up the ESTRATUM values

The open TELEMAC-MASCARET template for Joomla!2.5, the HTML 4 version.