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. 2018 Jan 26;8:1711. doi: 10.1038/s41598-018-19440-9

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© The Author(s) 2018

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Meshing of a single CA branch. (a–d) Examples of the patch (CA cross-section) obtained by increasing the number of circular subdivisions(v). (e) CA surface $\vec{S} (u, v)$ and centerline $\vec{C} (t)$ (during the hex-meshing u = t). (f) Generation of quadrilateral patches over the CA. (g) Generation of the hex-blocks using successive quad-patches (there are 10 subdivisions in the longitudinal-u and 8 subdivisions in the circular-v direction).