Micro-fluid mixing is an important aspect of many of the various micro-fluidic systems used in biochemical production, biomedical industries, microenergy systems and some electronic devices. Active or highly effective passive mixing techniques are often required. In this study, two pulsed injectors are used to actively enhance mixing in a high aspect ratio microchannel (125 μm deep and 1 mm wide). The main channel has two adjacent flowing streams with 100% dye and 0% dye concentrations, respectively. Two injectors (125 μm deep and 250 μm wide) are located on opposite sides of the channel and off-set in the downstream direction. A dye solution is used to map local mixing throughout the channel by measuring concentration variations as a function of both space and time. Images of the concentration variations within the channel are used to quantify mixing. It is shown that there is a high degree of repeatability of concentration distribution as a function of phase of the pulsing cycle. The flow rate ratio between the injectors and main channel is found to be the most influential parameter on overall mixing, and evidence of an optimal flow rate ratio and frequency is presented. A nondimensional correlation is presented that could be used to predict the level of mixing for the conditions studied.
Skip Nav Destination
ASME 2003 1st International Conference on Microchannels and Minichannels
April 24–25, 2003
Rochester, New York, USA
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-3667-3
PROCEEDINGS PAPER
Pulsed Injector Induced Mixing in High Aspect Ratio Microchannel Flow
B. Siripoorikan,
B. Siripoorikan
Oregon State University, Corvallis, OR
Search for other works by this author on:
J. A. Liburdy,
J. A. Liburdy
Oregon State University, Corvallis, OR
Search for other works by this author on:
D. V. Pence
D. V. Pence
Oregon State University, Corvallis, OR
Search for other works by this author on:
B. Siripoorikan
Oregon State University, Corvallis, OR
J. A. Liburdy
Oregon State University, Corvallis, OR
D. V. Pence
Oregon State University, Corvallis, OR
Paper No:
ICMM2003-1109, pp. 829-836; 8 pages
Published Online:
February 24, 2009
Citation
Siripoorikan, B, Liburdy, JA, & Pence, DV. "Pulsed Injector Induced Mixing in High Aspect Ratio Microchannel Flow." Proceedings of the ASME 2003 1st International Conference on Microchannels and Minichannels. 1st International Conference on Microchannels and Minichannels. Rochester, New York, USA. April 24–25, 2003. pp. 829-836. ASME. https://doi.org/10.1115/ICMM2003-1109
Download citation file:
6
Views
Related Proceedings Papers
Related Articles
Microfluidic Transport in Ternary Liquid Layers Due to Sinusoidal Thermocapillary Actuation
J. Heat Mass Transfer (July,2023)
Mechanical Stress Analysis of Microfluidic Environments Designed for Isolated Biological Cell Investigations
J Biomech Eng (December,2009)
Neuro-Genetic Optimization of Temperature Control for a Continuous Flow Polymerase Chain Reaction Microdevice
J Biomech Eng (August,2007)
Related Chapters
Medicine Distribution Security and Quality Monitoring System Based to RFID
International Conference on Advanced Computer Theory and Engineering, 4th (ICACTE 2011)
Cavitating Flow in a Model Diesel Injector Return Valve
Proceedings of the 10th International Symposium on Cavitation (CAV2018)
Large Eddy Simulation of the Internal Injector Flow During Pilot Injection
Proceedings of the 10th International Symposium on Cavitation (CAV2018)