Open AccessInvestigation of unsteady flow regime in a T-shaped channel by means of Time-Resolved PLIF and PIV techniques
Author(s) -
M. V. Shestakov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1382/1/012040
Subject(s) - reynolds number , mixing (physics) , flow (mathematics) , mechanics , channel (broadcasting) , work (physics) , open channel flow , temporal resolution , physics , computer science , optics , thermodynamics , turbulence , telecommunications , quantum mechanics
T-shaped channels are widely used as micro-mixers in microfluidic systems for chemical and biochemical engineering applications. The mixing efficiency of T-shaped channels relies on three-dimensional flow structure which is dependent on Reynolds number. The most favourable flow regime with relation to the mixing efficiency is an unsteady engulfment flow regime, which has a periodic nature. In the present work, the spatial and temporal scales formed in a T-shaped channel are studied at Reynolds number corresponding to unsteady three-dimensional flow regime. The combination of PLIF and PIV techniques with the high temporal resolution was used in the T-channel cross-sections to investigate the evolution of velocity and concentration fields.