I set the density of dem pariticles as 1.225 and used the insert/pack command to insert particles continuously. In the couplingProperties file I used these settings as follows:
modelType "A"; // A or B
couplingInterval 100;
voidFractionModel divided;
locateModel engine;
meshMotionModel noMeshMotion;
regionModel allRegion;
IOModel "off";
dataExchangeModel twoWayMPI;//twoWayFiles;//oneWayVTK;//
averagingModel dilute; //dilute;//
clockModel standardClock;//off;
forceModels
(
SchillerNaumannDrag
gradPForce
viscForce
Archimedes
);
But the bubbles didn't move as what I thought. It's all out of order. The bubbles didn't move up under the buoyance effect.
Then I set the coupling intervals as 1000, this time the bubbles can move up, but it's not continuous and the rising velocity is very fast just like the drag force didn't work. I can't figure out what's wrong with my case.
Thanks for any help!!
yours
Zhao