Hello, good morning. For my model, the concentration should be between 0-1 mol/l. However, some values are over 1, the largest values are about 1.03 (3%of the expectable largest value), and some values are under 0, about -0.03 for the lowest values. The two inlet zones (one inlet concentration is set as 1, another inlet concentration is set as 0) are special, which produce most of these special values. Even I let the meshes finer (after enough meshes), these special values almost do not change. Certainly, when I use coarse meshes, the non-physical values are more obvious. Maybe it is different to totally eliminate these special values, and they are related to calculation error.
Hi,
I not sure did I understand you correctly...? This is just modeling trick how to get over problems during solving. Like Ivar said other things (mesh etc) are still main solution to this problems (if you want to get accurate results). When other things are ok, then difference between values C and c should be minimal.
Best regards
Tero
Hi,
I not sure did I understand you correctly...? This is just modeling trick how to get over problems during solving. Like Ivar said other things (mesh etc) are still main solution to this problems (if you want to get accurate results). When other things are ok, then difference between values C and c should be minimal.
Best regards
Tero