Theoretical and experimental study of microchannel blockage phenomena

Eiichiro Yamaguchi, Ronald Adrian

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Microchannel blockage phenomena by hard, spherical particles have been investigated experimentally and theoretically. The study was performed over a range of particle-to-channel diameter ratios of 0.14 < R < 0.65. Two mechanisms have been investigated: orthokinetic flocculation and hydrokinetic arching. Arching appears to be the main mechanism for large, hard particles. In the absence of Brownian motion and inter-particle repulsive forces, other than simple Hertzian contact force, the blockage phenomenon is described by three non-dimensional parameters, N, R and β. The mean total number of particles in the channel having length L is N. Ratio of a diameter of particle (d p) and a diameter of channel (D) is R. Blockage efficiency factor β is determined experimentally. The data shows that a critical value N c exists as a function of R. N > N c implies high likelihood of blockage; if N < N c, blockages were never observed. The critical number decreases dramatically with increasing R. Blockages can occur at surprisingly low values of the volume concentration (φ). The experimental results matches well with the theory for the combinations of straight glass capillary, 76<D<156μm, 100mm-length, and spherical polymer particle, 22>d p<48μm.

Original languageEnglish (US)
Title of host publicationInternational Conference on Microchannels and Minichannels
EditorsS.G. Kandlikar
Pages851-857
Number of pages7
Volume1
StatePublished - 2003
Externally publishedYes
EventFirst International Conference on Microchannels and Minichannels - Rochester, NY, United States
Duration: Apr 24 2003Apr 25 2003

Other

OtherFirst International Conference on Microchannels and Minichannels
CountryUnited States
CityRochester, NY
Period4/24/034/25/03

Fingerprint

Microchannels

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Yamaguchi, E., & Adrian, R. (2003). Theoretical and experimental study of microchannel blockage phenomena. In S. G. Kandlikar (Ed.), International Conference on Microchannels and Minichannels (Vol. 1, pp. 851-857)

Theoretical and experimental study of microchannel blockage phenomena. / Yamaguchi, Eiichiro; Adrian, Ronald.

International Conference on Microchannels and Minichannels. ed. / S.G. Kandlikar. Vol. 1 2003. p. 851-857.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yamaguchi, E & Adrian, R 2003, Theoretical and experimental study of microchannel blockage phenomena. in SG Kandlikar (ed.), International Conference on Microchannels and Minichannels. vol. 1, pp. 851-857, First International Conference on Microchannels and Minichannels, Rochester, NY, United States, 4/24/03.
Yamaguchi E, Adrian R. Theoretical and experimental study of microchannel blockage phenomena. In Kandlikar SG, editor, International Conference on Microchannels and Minichannels. Vol. 1. 2003. p. 851-857
Yamaguchi, Eiichiro ; Adrian, Ronald. / Theoretical and experimental study of microchannel blockage phenomena. International Conference on Microchannels and Minichannels. editor / S.G. Kandlikar. Vol. 1 2003. pp. 851-857
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