We statically analyzed the structure transition of localized turbulence from puffs to oblique (helical) stripe pattern in incompressible pressure-driven annular pipe flow using direct numerical simulations in long domains, with focusing on the axisymmetric property of the associated large-scale flows. We demonstrated the gradual transition: as the radius ratio increases, allowing for an azimuthal large-scale component, oblique stripes emerge as in the planar limit.
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