Dear OpenLB,

When I use the free energy model to simulate the multiphase flow, I get the following error:

“WARNING: no discreteNormal is found”.

I find this error is from the below codes:

sOnBC1.addFreeEnergyWallBoundary( superGeometry, 2, alpha, kappa1, kappa2, h1, h2, 1 );

sOnBC2.addFreeEnergyWallBoundary( superGeometry, 2, alpha, kappa1, kappa2, h1, h2, 2 );

My simulation domain includes many sphere particles and some of particles are not completely inside the the boundary. That is, only part of sphere is inside the boundary. I think this is the reason for that error. Could someone can help me to solve it?

Many thanks

Best regards,

Simon.