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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: J Comput Phys. 2015 Oct 1;298:446–465. doi: 10.1016/j.jcp.2015.05.049

Fig. 15.

Fig. 15

(a) Schematic of two families of helical fibers and the patch (the hatched area) in (z, θ) surface with radial coordinate r. The patch volume associated with the helical spring of each family is rΔθΔrΔz, if a < r < b; or 0.5rΔθΔrΔz, if r = a or r = b, where a and b are the r-coordinate of the inner surface and outer surface. (b) Illustration of helical fibers running on the inner-most surface of the mucosal layer.