Title :
Micro-PIV measurements for hydrodynamic characterizations of microfluidic flows
Author :
Balan, Catalin Mihai ; Marculescu, Catalin ; Iliescu, C.
Author_Institution :
Micro & Nano Fluidics Lab., IMT-Bucharest, Bucharest, Romania
Abstract :
The application presented in this paper is based on a non-invasive method for velocity measurement in microchannels. The investigation focuses on the separation phenomena and the manifestations of vortical structures in a Y-bifurcation with a square cross-section. A micro-PIV measurement system is used to obtain velocity profiles distributions in the primary flow domain and in the secondary ones (vortex zones). The experimental data is compared to numerical simulations performed with FLUENT™ code in 3D geometries. Calculated flow patterns are found to be consistent with experiment manifestations, offering useful insights on the vortical structures in the analysed applications.
Keywords :
bifurcation; flow separation; flow simulation; flow visualisation; hydrodynamics; microchannel flow; numerical analysis; pattern formation; velocity measurement; vortices; 3D geometries; FLUENT code; Y-bifurcation; flow patterns; hydrodynamic characterizations; micro-PIV measurements; microchannels; microfluidic flows; noninvasive method; numerical simulation; primary flow domain; secondary flow domain; separation phenomena; square cross-section; velocity measurement; velocity profile distributions; vortex zones; vortical structures; Bifurcation; Fluid flow measurement; Fluids; Measurement by laser beam; Microfluidics; Surface emitting lasers; Velocity measurement; Micro-PIV measurements; microchannels; numerical prediction; secondary flows;
Conference_Titel :
Semiconductor Conference (CAS), 2012 International
Conference_Location :
Sinaia
Print_ISBN :
978-1-4673-0737-6
DOI :
10.1109/SMICND.2012.6400641