Viscosity-dominated regime of flow in fluidic devices at very low Reynolds numbers

0460101 - ÚT 2017 RIV CZ eng K - Konferenční příspěvek (tuzemská konf.)
Tesař, Václav
Viscosity-dominated regime of flow in fluidic devices at very low Reynolds numbers.
30th Symposium on Anemometry. Praha: Institute of Hydrodynamics CAS, v. v. i., 2016 - (Chára, Z.; Klaboch, L.), s. 79-87. ISBN 978-80-87117-14-9.
[Symposium on Anemometry /30./. Holany-Litice (CZ), 31.05.2016-01.06.2016]
Grant CEP: GA ČR GA13-23046S
Institucionální podpora: RVO:61388998
Klíčová slova: fluidics * Reynolds number * pressure-driven microfluidics
Kód oboru RIV: BK - Mechanika tekutin

Because of their small size – and typically due to high viscosity of handled fluids - some microfluidic devices have to operate at very low Reynolds number levels. The devices based on using inertia of a deflected jet under these conditions losetheir efficiency and finally exhibit a phenomenon so far not discussed in literature: they enter a regime in which their behaviour is no more specified by Reynolds number value. Paper presents a detailed case description of a valve and itstransition into the sub-dynamic regime. Pressure-assisted flow into the device terminal is characterised by newly introduced pressure parameter.
Trvalý link: http://hdl.handle.net/11104/0260318