Fluent Meshing
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      How to force boundary layers in sharp edges in ANSYS Fluent watertight meshing

      Solve the stair-step boundary layer in sharp edges

      Initial Mesh (Discontinuous boundary layer): 

      1. In the boundary layer task associated with the faces where the boundary layer is not being created, go to advanced options, and in "Ignore Boundary Layers at Acute Angles?" set it to no. 
        A screenshot of a computer AI-generated content may be incorrect.
      2. Now, in the volume mesh option, go to advanced options, and in the "Use default stair-step handling?" select No, Exclude both checks. 
        A screenshot of a computer AI-generated content may be incorrect.
      3. You have to make both changes to achieve the results. Also, to improve the quality of the mesh in this region, you may need to do local refinement. 
        Outcome: