The value of first cell thickness near the wall (spacing 1 ..in ICEM) ?
 

Hello
I've been trying to model the sand-water slurry flow a horizontal cylindrical pipe using the eulerian multiphase model.

I'm using ICEM for meshing and all is fine, m using the spacing 1 as 0.5 mm
and ratio 1 as 1.2...for refining the mesh at the wall

But my solution is not getting converged even after 12000 iterations
Any help what could hv been wrong ?