Topology and dynamics of streakline on the mixing boundary of two-dimensional chaotic flow induced by a rotationally reciprocating anchor impeller

• The boundary of two mixing regions in the horizontal cross-section was visualized. elongating behavior streakline on experimentally analyzed. fluid transported at a hyperbolic fixed point expands to both regions. A wavy larger Re enhances exchange between rotationally reciprocating impeller separates vessel into under laminar flow regime. In this study, we investigated separation mechanism from dynamics stretching universal active successfully visualized by injecting tracer specific position elongational rate proportionally increased with increase Reynolds number. Besides, linear component elongation drastically changed R e ∼ 10 due bending boundary. Compared other chaotic flows, proved that particles are enclosed turnstile lobes wall, boundary, namely separatrix, shaft being another point, and then distributed evenly It concluded becomes > 10, which increases area enhance transportation