Influence of Mesh resolution in Chemical Species Mixing Problem

What is the influence of mesh resolution in the chemical species mixing problem?

The mesh impacts the results of the numerical calculations. The species mixing problem is demonstrated in the image shown in the attached document. Chemical species A, flowed into the calculation system in 1 [m /s]. It is different from inlet B as a condition. Chemical species A and B will be mixed in the baffle at the back. It provides special types of mesh. So, if you are intended to do a quantitative evaluation, accurate resolution of mesh should be used.

For detailed information, please refer to this document.