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Secondary flows of viscoelastic fluids in serpentine microchannels

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Academic year: 2021

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Figure

Fig. 1 Visualisation of mixing in a serpentine microchannel (the chan- chan-nel edges are highlighted in white): two streams of fluid are co-injected in a Y-junction, one of them being fluorescently labelled
Fig. 3 (a) Numerically predicted structure of the secondary flow:
Fig. 5 Experimental (bullets) and numerical (full lines) velocity plots at location A1 (see Fig.2) for the primary (a) and wall-normal velocity (b), for increasing values of De ∗ (• Newtonian fluid, • 0.43, • 0.71, • 0.86 and - 0, - 0.11, - 0.22, - 0.44, -
Fig. 6 Top row: Evolution of the cross-sectional view down the channel for the polymeric solution flown at De ∗ = 0.86 in the channel used for the µPIV experiments: the white line highlights the position of the interface, as obtained by adjusting the horiz

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