open TELEMAC-MASCARET The mathematically superior suite of solvers

Dear all,

I'm running a flooding simulation in FE and I want to compare the results with FV results. However theres ist no problem with FE but the FV simulation does not start (Program received signal 8 (SIGFPE)). Are there any suggestions for this? I attached the error log and my steering file. Thank you in advance.

Engelbert

Hi

I'm not an expert of FV but as indicate in yoru output file, the Floating point exception arise at line 189 of cdl_hllc.f file where you could find the computation of SQRT(G*H1)
So probably H1=0...

As already indicate on some post, we strongly advise users to use the latest version (V7P2).
So try to move on this version and try again. A lot of developmements have been made on FV version of telemac

Regards

Hi Engelbert,

some remarks and hopefully one at least is helpful
You continue the computation from a hotstart file. Maybe you should reset the time to zero if you start the hydrograph in the liq file at time 0.

In case you did: you shouldn't continue the FV simulation from a hotstart file which you simulated with FE, especially if you had TREATMENT OF NEGATIVE DEPTHS =1 in the FE options which allows negative water depths.

By the way, the FV HLLC scheme in Telemac doesn't compute the turbulent stress terms in the SWE equations, therefore the keywords for turbulence model and the velocity diffusivity are obsolete.

For checking what is going on in the first time step you should set LISTING PRINTOUT PERIOD equal to 1. Sometimes this can be very helpful.

Hope this helps and greetings from Graz!

Clemens

Hi Clemens,

thanks for your remarks, they helped a lot. Indeed my problem was trying to continue with a FE generated hotstart file. So changing everything to FV (even generating the hotstart file) solved my problem.

Thank you again.
Engelbert