nThe crossed check mark just means that is is meshed. When there is no mesh it is uncrossed. If there is a problem with the geometry such as a missing thickness or material, it is red.nBias factor is irrelevant. Element quality is relevant. You can look at mesh metrics for Aspect Ratio and Skewness. High aspect ratio in the boundary layer is appropriate because the velocity gradient is so high near the wall.nSelective meshing means you are manually choosing what to mesh first. If you clear the mesh and just click the Generate Mesh button, you might not get the same mesh back, because the order of meshing can change the mesh.n