caa a22 4500 463234979 CHVBK 20180405153254.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1007/s10404-006-0109-4 doi (NATIONALLICENCE)springer-10.1007/s10404-006-0109-4 Efficient mixing of viscoelastic fluids in a microchannel at low Reynolds number [Elektronische Daten] [Hiong Gan, Yee Lam, Nam Nguyen, Kam Tam, Chun Yang] In this paper, we examined mixing of various two-fluid flows in a silicon/glass microchannel based on the competition of dominant forces in a flow field, namely viscous/elastic, viscous/viscous and viscous/inertial. Experiments were performed over a range of Deborah and Reynolds numbers (0.36<De<278, 0.005<Re<24.2). Fluorescent dye and microshperes were used to characterize the flow kinematics. Employing abrupt convergent/divergent channel geometry, we achieved efficient mixing of two-dissimilar viscoelastic fluids at very low Reynolds number. Enhanced mixing was achieved through elastically induced flow instability at negligible diffusion and inertial effects (i.e. enormous Peclet and Elasticity numbers). This viscoelastic mixing was achieved over a short effective mixing length and relatively fast flow velocities. Springer-Verlag, 2006 Viscoelastic nationallicence Microchannel nationallicence Mixing nationallicence Flow instability nationallicence Gan Hiong School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, aut Lam Yee School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, aut Nguyen Nam School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, aut Tam Kam School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, aut Yang Chun School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, aut Microfluidics and Nanofluidics Springer-Verlag 3/1(2007-02-01), 101-108 1613-4982 3:1<101 2007 3 10404 https://doi.org/10.1007/s10404-006-0109-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10404-006-0109-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gan Hiong School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore aut NATIONALLICENCE 700 1- Lam Yee School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore aut NATIONALLICENCE 700 1- Nguyen Nam School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore aut NATIONALLICENCE 700 1- Tam Kam School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore aut NATIONALLICENCE 700 1- Yang Chun School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore aut NATIONALLICENCE 773 0- Microfluidics and Nanofluidics Springer-Verlag 3/1(2007-02-01), 101-108 1613-4982 3:1<101 2007 3 10404 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer