Change material number

[lilianaxavier]

Hello everybody,rnrnI am using the cylinder3d example to run a simulation with periodic boundary conditions. I have changed the walls to bulk dynamics:rnrn /// Material=2 –>bounce backrn sLattice.defineDynamics(superGeometry, 2, &bulkDynamics);rn //sLattice.defineDynamics(superGeometry, 2, &instances::getBounceBack<T, DESCRIPTOR>());rnrnand turn on the periodic boundary conditions by adding this:rnrncuboidGeometry.setPeriodicity(false, true, true);rnrnIt seems it works, but the corners (vertices) of the box are still marked as “”walls”” with material 2, causing a little disturbing on the flow… Can anyone give me an idea to fix this and set the voxels of the corners as bulk?rnrnThanks!

[mathias]

Hi,rnrnIn the periodic case, the corner nodes needs to be of the inflow and outflow type. Otherwise the domain is not closed and you will get bad results. rnrnBestrnMathias

[lilianaxavier]

Hello,rnrnI tried to change the material of the voxels located at the corners, but I was not able to do… I tried to change to inflow, outflow, bulk, but all the changes I did had no effects.rnrnBest wishes.

[mathias]

Hi Liliana,rnrnPlease have a look at our thermalXd example. There, we have the same set-up implemement which you seek to archive. If it doesnt work, please, send Thomas your case ;-).rnrnBestrnMathias

[lilianaxavier]

Hi Mathias,rnrnwe fix it, now!rnrnThe problem was: I ran the case using 12 processors and the disturbing on the flow showed up near the outlets, but when I ran using 8 processors, the flow was not disturbed and the result was the exactly what we was expecting for.rnrnThanks a lot for the attention!rnrnBest regards,rnLiliana.

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