TELEMAC-MASCARET Forum: INSTABILITY IN THE CONDITION OF THE DOWNSTREAM-MORPHOLOGICAL MODEL (1/1)

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TOPIC: INSTABILITY IN THE CONDITION OF THE DOWNSTREAM-MORPHOLOGICAL MODEL

INSTABILITY IN THE CONDITION OF THE DOWNSTREAM-MORPHOLOGICAL MODEL 4 years 8 months ago #37001

m.reyes

Hi

When performing the telemac2d-sysiphe simulation, in the downstream edge condition; over time an instability is formed downstream (I attach the image), I am using the noerod.f file to define the depth of erosion, and I am currently running with the Engelund-Hansen formula.
How can I correct this instability?

Thanks.

Attachments:

error.png (623KB)
t2d_sis.cas (3KB)
Sis.cas (2KB)
BOTTOM_BC_r1_CAP.cli (54KB)
noerod.f (3KB)

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INSTABILITY IN THE CONDITION OF THE DOWNSTREAM-MORPHOLOGICAL MODEL 4 years 8 months ago #37002

kopmann OFFLINE Senior Boarder Posts: 110 Thank you received: 70	Hi you set the water elevation and the velocities at the outflow boundary (5 5 5 in the cli-file). Usually only the water elevation is set (5 4 4). May be this helps. Best regards, Rebekka
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