A two-dimensional model was developed to predict concentration profiles resulting from passive, or diffusive, mixing of laminated layers formed in a fractal-like merging flow network. Both uniform and parabolic velocity profiles were considered in the model. Concentration profiles were experimentally acquired near the top surface of the flow network using laser induced fluorescence. The degree of mixing was assessed from concentration profiles at the end of each channel. Although the degree of mixing from the two-dimensional model well predicts the trend of the experimental degree of mixing, the numerical model under predicts the experimental values by approximately 25 percent. This may be due in part to the presence of top and bottom walls in the experimental device. These walls tend to slow the flow in this region, thereby increasing the residence time and improving the mixing. These top and bottom walls are neglected in the two-dimensional model. For the existing flow network, the degree of mixing is provided as a function of Peclet number. The degree of mixing is further investigated by varying the number of branching levels, the width of the initial flow channels, and the total flow length for a fixed Peclet number. A nondimensional parameter is established that serves as a design tool for predicting an optimum number of branching levels for fixed values of the total flow length, initial branch width and channel depth.
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
Laminate Mixing in Micro-Scale Fractal-Like Merging Channel Networks Available to Purchase
Kent E. Enfield,
Kent E. Enfield
Oregon State University, Corvallis, OR
Search for other works by this author on:
Jeremy J. Siekas,
Jeremy J. Siekas
Oregon State University, Corvallis, OR
Search for other works by this author on:
Deborah V. Pence
Deborah V. Pence
Oregon State University, Corvallis, OR
Search for other works by this author on:
Kent E. Enfield
Oregon State University, Corvallis, OR
Jeremy J. Siekas
Oregon State University, Corvallis, OR
Deborah V. Pence
Oregon State University, Corvallis, OR
Paper No:
ICMM2003-1114, pp. 859-867; 9 pages
Published Online:
February 24, 2009
Citation
Enfield, KE, Siekas, JJ, & Pence, DV. "Laminate Mixing in Micro-Scale Fractal-Like Merging Channel Networks." 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. 859-867. ASME. https://doi.org/10.1115/ICMM2003-1114
Download citation file:
5
Views
Related Proceedings Papers
Related Articles
Thermal Characterization of a Turbulent Free Jet With Planar Laser-Induced Fluorescence
J. Thermal Sci. Eng. Appl (October,2020)
Design of an Endoscope Shape Tracker to Guide Navigation in Colonoscopy
J. Med. Devices (June,2008)
Observations of Flame Behavior in a Laboratory-Scale Premixed Natural Gas/Air Gas Turbine Combustor From Planar Laser Induced Fluorescence Measurements of OH, Laser Doppler Anemometer Velocity Measurements, and Coherent Anti-Stokes Roman Spectrometer Temperature Measurements
J. Eng. Gas Turbines Power (October,2005)
Related Chapters
A Remote Sensing Laser Fluorometer
Water Quality Parameters
Design and Simulation a Fractal Antenna for VHF Frequency Band
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3
Fiber-Reinforced Plastic Pressure Vessels and ASME RTP-1–Reinforced Thermoset Plastic Corrosion-Resistance Equipment
Online Companion Guide to the ASME Boiler & Pressure Vessel Codes