Perfect! -----Ursprüngliche Nachricht----- Von: Dumux [mailto:dumux-boun...@listserv.uni-stuttgart.de] Im Auftrag von Etienne Ahusborde Gesendet: Dienstag, 28. November 2017 09:16 An: dumux@listserv.uni-stuttgart.de Betreff: Re: [DuMuX] Outflow boundary conditions
Dear Georg, In fact, we had the same idea and I can confirm that it works (see figure in the enclosed file). Thanks a lot Etienne Le 28/11/2017 à 09:01, georg.fut...@dlr.de a écrit : > Hi Etienne, > > I think an outflow boundary condition will only work correctly if the phase > that is leaving the domain is perfectly mixed, i.e. there is only transport > perpendicular to the outflow boundary face. You might be able to solve your > problem by appending a kind of pipe to your outflow. This way you are able to > use the outflow condition at the end of the pipe. I am not 100% sure whether > this will work. > > Best regards > Georg > > -----Ursprüngliche Nachricht----- > Von: Dumux [mailto:dumux-boun...@listserv.uni-stuttgart.de] Im Auftrag > von Etienne Ahusborde > Gesendet: Dienstag, 21. November 2017 13:50 > An: DuMuX User Forum; Mohamed Id Moulay > Betreff: [DuMuX] Outflow boundary conditions > > Dear DuMuX users, > > With my colleagues we are working on an example of reactive flow in porous > medium with an outflow boundary condition. > > To emphasize our issue, we have considered a simpler problem using the 1p2c > model where a component X1 is injected in pure water (see the enclosed > figures geometry.png and permeability.png). > > There are two zones of injections named Inflow1 and Inflow2 (where a flux is > imposed and a dirichlet boundary conditions is imposed for the concentration > of X1) and an outflow zone. The remaining boundaries are impermeable. > > The pictures X1cell.png and X1box.png depict the concentration of the > component X1 after 125s of injection respectively with the cell centered and > box schemes. We can see at the outflow the presence of two pikes at the > border between the outflow and the impermeable zones. > > These pikes are unphysical since the maximum value of the concentration > should be equal to the value of the dirichlet condition (that is 0.3). > > We would like to know is somebody ever had and fixed this problem? > > Thanks in advance. > > Best regards > > Etienne > > _______________________________________________ > Dumux mailing list > Dumux@listserv.uni-stuttgart.de > https://listserv.uni-stuttgart.de/mailman/listinfo/dumux _______________________________________________ Dumux mailing list Dumux@listserv.uni-stuttgart.de https://listserv.uni-stuttgart.de/mailman/listinfo/dumux
