Figure 6.
Mesh visualization of the computational domain: the left image shows a 3D helical structure with fine hexagonal mesh elements along the surface of twisted fins inside a cylindrical geometry; the right image provides a cross-sectional view of the same domain, highlighting the mesh distribution in the annular region.The image displays two geometric structures. On the left, there is a three-dimensional twisted form characterized by a mesh-like pattern composed of hexagonal shapes. The twists and angles create a complex visual texture. On the right, a two-dimensional circular shape is shown, also featuring a mesh with hexagonal patterns. This circular form appears to be a cross-section of the twisted structure, emphasizing the geometric relationship between the two shapes. Both illustrations provide a detailed view of the geometry, highlighting the intricacies of their designs.

Detail of the adopted mesh

Source: Authors’ own work

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