Re: [DuMuX] Check for phase presence in the mpnc model

An: DuMuX User Forum Betreff: Re: [DuMuX] Check for phase presence in the mpnc model I don't understand why the linear solver should get into trouble by this modification. What linear solver do you use? If you use an iterative one, can you check if you run into an exception from

Re: [DuMuX] Check for phase presence in the mpnc model

[mailto:dumux-boun...@listserv.uni-stuttgart.de] *Im Auftrag von *Bernd Flemisch *Gesendet:* Dienstag, 26. Mai 2015 16:29 *An:* DuMuX User Forum *Betreff:* Re: [DuMuX] Check for phase presence in the mpnc model Strange. By the solver, do you mean the Newton or the linear solver? Can you check if the values

Re: [DuMuX] Check for phase presence in the mpnc model

Hi Georg, I switched to UMFPack, it is better* and also a direct solver. Pardiso could be used, but you need a license. Have a look at at one of our Stokes examples how to use UMFPack. * Faster, terminates more reliably with singular matrices and subjectively converges better. Bye Christoph --

Re: [DuMuX] Check for phase presence in the mpnc model

applications and could this be an improvement? Kind regards Georg *Von:*Dumux [mailto:dumux-boun...@listserv.uni-stuttgart.de] *Im Auftrag von *Bernd Flemisch *Gesendet:*Mittwoch, 27. Mai 2015 12:36 *An:* DuMuX User Forum *Betreff:* Re: [DuMuX] Check for phase presence in the mpnc model I don't

Re: [DuMuX] Check for phase presence in the mpnc model

results I will be glad to share them with you. King regards Georg Von: Dumux [mailto:dumux-boun...@listserv.uni-stuttgart.de] Im Auftrag von Bernd Flemisch Gesendet: Dienstag, 26. Mai 2015 15:06 An: DuMuX User Forum Betreff: Re: [DuMuX] Check for phase presence in the mpnc model Hi Georg, On 05

Re: [DuMuX] Check for phase presence in the mpnc model

for phase presence in the mpnc model Hi Georg, On 05/22/2015 08:24 AM, georg.fut...@dlr.de mailto:georg.fut...@dlr.de wrote: Hello DuMuX, I started working with the mpnc model and I wonder how I can check for the phase presence. Just accessing the phase saturation does not seem

Re: [DuMuX] Check for phase presence in the mpnc model

: [DuMuX] Check for phase presence in the mpnc model Hi Georg, On 05/22/2015 08:24 AM, georg.fut...@dlr.demailto:georg.fut...@dlr.de wrote: Hello DuMuX, I started working with the mpnc model and I wonder how I can check for the phase presence. Just accessing the phase saturation does not seem

Re: [DuMuX] Check for phase presence in the mpnc model

16:29 An: DuMuX User Forum Betreff: Re: [DuMuX] Check for phase presence in the mpnc model Strange. By the solver, do you mean the Newton or the linear solver? Can you check if the values in elemVolVarsPrev1/2 make sense? Bernd On 05/26/2015 03:53 PM, georg.fut...@dlr.demailto:georg.fut...@dlr.de

Re: [DuMuX] Check for phase presence in the mpnc model

No, this does not work at all. The solver does not converge. Von: Dumux [mailto:dumux-boun...@listserv.uni-stuttgart.de] Im Auftrag von georg.fut...@dlr.de Gesendet: Dienstag, 26. Mai 2015 15:47 An: dumux@listserv.uni-stuttgart.de Betreff: Re: [DuMuX] Check for phase presence in the mpnc model

Re: [DuMuX] Check for phase presence in the mpnc model

...@listserv.uni-stuttgart.de] *Im Auftrag von *georg.fut...@dlr.de *Gesendet:* Dienstag, 26. Mai 2015 15:47 *An:* dumux@listserv.uni-stuttgart.de *Betreff:* Re: [DuMuX] Check for phase presence in the mpnc model Hi Bernd, That’s a good idea. I will try it and see what happens. Kind regards Georg *Von

[DuMuX] Check for phase presence in the mpnc model

Hello DuMuX, I started working with the mpnc model and I wonder how I can check for the phase presence. Just accessing the phase saturation does not seem to be a safe way since during newton iterations the value may differ from zero even though the phase is not present (am I right here?).