Hi, I am trying to do a cfd analysis of a mini solar plant with 7 modules stacked one behind another with an enclosure. The project spans approx 100m x 70m x 13m. Thing is no matter what i do to produce a good mesh like reducing element size, mapped face meshing, edge sizing, reducing skewness or any other way, the orthogonal quality comes out to be of the order of e-02. I have some experience in fluent but not enough to solve this problem. Any help would be appreciated. Thankyou.