The objective of this research is to study the effects of surface roughness on flows through nano/micro channels with a focus on designing better biomedical devices. A two dimensional computational model for fluid flow based on Lattice Boltzmann (LB) method has been applied first to a 10 μm width channel with flat boundary conditions and the flow profiles have been found to have an excellent comparison with analytical results. Rough boundary conditions using rectangular tooth-shaped corrugations giving about 0.25 μm average roughness have then been applied to the same 10 μm channel flow. We have observed significant differences in the velocity profiles between the flows with rough and flat boundary conditions. Boundary slips have also been observed in case of flows with rough boundary conditions. Surface roughness effects have increased or the differences between the flows with rough and flat boundary conditions have increased with decreased channel widths.
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ASME 2007 2nd Frontiers in Biomedical Devices Conference
June 7–8, 2007
Irvine, California, USA
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4266-5
PROCEEDINGS PAPER
Effects of Surface Roughness on Flows Through Nano/Micro Channel Based Biomedical Devices: A Study by Lattice Boltzmann Method Available to Purchase
Mohammed S. Mayeed,
Mohammed S. Mayeed
Wayne State University, Detroit, MI
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Golam M. Newaz
Golam M. Newaz
Wayne State University, Detroit, MI
Search for other works by this author on:
Mohammed S. Mayeed
Wayne State University, Detroit, MI
Golam M. Newaz
Wayne State University, Detroit, MI
Paper No:
BioMed2007-38100, pp. 153-154; 2 pages
Published Online:
February 24, 2009
Citation
Mayeed, MS, & Newaz, GM. "Effects of Surface Roughness on Flows Through Nano/Micro Channel Based Biomedical Devices: A Study by Lattice Boltzmann Method." Proceedings of the ASME 2007 2nd Frontiers in Biomedical Devices Conference. ASME 2007 2nd Frontiers in Biomedical Devices. Irvine, California, USA. June 7–8, 2007. pp. 153-154. ASME. https://doi.org/10.1115/BioMed2007-38100
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