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Hi,

While trying to run a sisyphe simulation, I get the following error.following the error the simulation run execution is terminated.

What is the reason of this error. Is there any parameter which has to be changed in the sisyphe steering file ?

I have attached the sisyphe steering file.


Thanks
Gourish

Hi Gourish,

Are you using FINITE VOLUMES of FINITE ELEMENTS? Advection scheme 14 should be used with FV but it is not specified in your steering file. If FE is employed try using advection scheme 13 instead.

Regards,
Costas

Hello,

In case the problem remains you can also try to change the tolerance (sum of fractions must be 1.D0 with some tolerance) in subroutine layer.f (but generally when you have such problems it comes from before the call to layer).

Regards,

Jean-Michel Hervouet

Dear Costas and Jean-Michel Hervouet,

I have used FINITE ELEMENT, so probably Advection scheme 14 may be the mistake.

However the simulation runs properly when I change the BED-LOAD TRANSPORT FORMULA to 1.

I shall try changing the advection scheme to 13 with BED-LOAD TRANSPORT FORMULA = 5, and if the problem still remains then I shall try the method of changing the tolerance as mentioned by Jean-Michel Hervouet.

Thanks,
With Best regards,
Gourish

Hello,

FINITE ELEMENT (there is actually little difference between finite element and finite volume option for solving the Exner equation, except that on finite element side we use an equivalent of schmeme 13 that ensures the positivity of the sediment height, so that there is nothing else to do for non erodable bed) is OK and the bedload formula should not have any influence, so maybe it is just a matter of tolerance.

JMH