TELEMAC-MASCARET Forum: Steady state simulation (3/3)

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TOPIC: Steady state simulation

Steady state simulation 1 year 3 weeks ago #43565

Marleine OFFLINE Junior Boarder Posts: 32	Kindly find the link to download the geometry file : grosfi.ch/yqcTR25Vpxu
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Steady state simulation 8 months 4 weeks ago #44253

Marleine
OFFLINE
Junior Boarder
Posts: 32

Hello Chi-Tuan,
I noticed many weeks ago considering the control section out put file that the outflow is equal to the total inflow by the end of the simulation when I ignore the decimal part of the numbers. I would like to know if this makes sens to you ?
In another hand I am still wondering how necessary it is to run the steady state as first step of my work. Is it wrong to directly start with unsteady simulation ??

Thank you in advance for your answer.
Best Regards,
Marleine

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Steady state simulation 8 months 4 weeks ago #44261

Renault
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Senior Boarder
Posts: 120
Thank you received: 33

Marleine wrote:

In another hand I am still wondering how necessary it is to run the steady state as first step of my work. Is it wrong to directly start with unsteady simulation ??

I wouldn't say it's "wrong", but if you are using any post-processing tools that look for the minimum or maximum value across the simulation time frame, the unsteady beginning may falsify results. As well, starting multiple scenarios from one same restart file ensures consistency. But strictly speaking, no, it is not necessary to start in unsteady.

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The following user(s) said Thank You: Marleine

Steady state simulation 8 months 4 weeks ago #44263

Marleine OFFLINE Junior Boarder Posts: 32	Hi Renault, Thank you for the quick reply. I have to determine the flooded area as the area where water depth is greater than a minimum value. Is it correct to use the output of the last time step as initial condition for the unsteady simulation if it is not in hotstart ?? Regards, Marleine
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Steady state simulation 8 months 3 weeks ago #44284

pham OFFLINE Administrator Posts: 1559 Thank you received: 602	Hello Marleine, Some users reported me that control sections may not compute the flowrates correctly through sections and the feature fluxline better works. You can try it (see TELEMAC-2D user manual in section just after control sections). Hope this helps, Chi-Tuan
	The administrator has disabled public write access. The following user(s) said Thank You: Marleine