Numerical simulations of circular particles in parallel plate channel flow using Lattice Boltzmann method

Toru Hyakutake; Takeshi Matsumoto; Shinichiro Yanase

doi:10.1299/kikaib.72.1434

Numerical simulations of circular particles in parallel plate channel flow using Lattice Boltzmann method

Toru Hyakutake, Takeshi Matsumoto, Shinichiro Yanase

Graduate School of Natural Science and Technology

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Simulations with Lattice Boltzmann method are conducted for particulate suspension in a plane channel flow at low and moderate Reynolds numbers to investigate blood cell behavior in microvascular flows. The simulation results for three kinds of hematocrit indicate existence of an important relationship between the Reynolds number and the variance of the particles. When the hematocrit is small, it is found that the particles are concentrated between the centerline and the wall, that is, Segré-Silberberg effect appears. As the hematocrit becomes larger, on the other hand, this effect disappears and the variance of the particles is increased. In the case of an inelastic collision, the particles which flow near the wall are increased in comparison with the case of the elastic collision.

Original language	English
Pages (from-to)	1434-1441
Number of pages	8
Journal	Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume	72
Issue number	6
DOIs	https://doi.org/10.1299/kikaib.72.1434
Publication status	Published - Jun 2006

Keywords

Blood Cells
Inelastic Collision
Lattice Boltzmann Method
Microvascular Flow
Segré-Silberberg Effect

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering

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Numerical simulations of circular particles in parallel plate channel flow using Lattice Boltzmann method. / Hyakutake, Toru; Matsumoto, Takeshi; Yanase, Shinichiro.

In: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 72, No. 6, 06.2006, p. 1434-1441.

Research output: Contribution to journal › Article › peer-review

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abstract = "Simulations with Lattice Boltzmann method are conducted for particulate suspension in a plane channel flow at low and moderate Reynolds numbers to investigate blood cell behavior in microvascular flows. The simulation results for three kinds of hematocrit indicate existence of an important relationship between the Reynolds number and the variance of the particles. When the hematocrit is small, it is found that the particles are concentrated between the centerline and the wall, that is, Segr{\'e}-Silberberg effect appears. As the hematocrit becomes larger, on the other hand, this effect disappears and the variance of the particles is increased. In the case of an inelastic collision, the particles which flow near the wall are increased in comparison with the case of the elastic collision.",

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AB - Simulations with Lattice Boltzmann method are conducted for particulate suspension in a plane channel flow at low and moderate Reynolds numbers to investigate blood cell behavior in microvascular flows. The simulation results for three kinds of hematocrit indicate existence of an important relationship between the Reynolds number and the variance of the particles. When the hematocrit is small, it is found that the particles are concentrated between the centerline and the wall, that is, Segré-Silberberg effect appears. As the hematocrit becomes larger, on the other hand, this effect disappears and the variance of the particles is increased. In the case of an inelastic collision, the particles which flow near the wall are increased in comparison with the case of the elastic collision.

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