[mwmalkawi]

I noticed when i assign diffusion coefficient DT in transportProperties of water of 2.299·10−9 m2/s it doesn't show physical or realistic contours but when i increase DT to 0.1 or 1 it start to give realistic results so does anyone know the reason as i read in other threads they had the same issue where they increased DT to 100. Appreciate your help as i been struggling on this one for last two month