### Abstract

Particle transport in microchannel is presented. This article focuses on situations in which the sizes of the particles are comparable to the sizes of the channels. These solid bodies are sufficiently large that momentum is exchanged between the bodies and the flowing fluid. As a result, the solid bodies affect the fluid flow significantly, and vice versa, resulting in a transient process in which the motions of the solid bodies and the flow field are strongly coupled. The flow field and the particulate flow must then be solved simultaneously. The solid bodies are modeled as a fluid constraint to move with rigid body motion. The solid-fluid interface is described using a distance function. For demonstration purposes, the finite-volume method is used to solve the resulting set of governing equations. The present approach is validated against (1) flow around stationary, (2) flow around forced rotating, (3) flow around freely rotating cylinders, and (4) sedimentation of a circular cylinder under gravity. Finally, the motion of particles carried by an incompressible fluid in a microchannel system is studied.

Original language | English |
---|---|

Pages (from-to) | 141-157 |

Number of pages | 17 |

Journal | Numerical Heat Transfer, Part B: Fundamentals |

Volume | 51 |

Issue number | 2 |

Early online date | 24 Feb 2007 |

DOIs | |

Publication status | Published - 1 May 2007 |

Externally published | Yes |

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### Cite this

*Numerical Heat Transfer, Part B: Fundamentals*,

*51*(2), 141-157. https://doi.org/10.1080/10407790600878585

}

*Numerical Heat Transfer, Part B: Fundamentals*, vol. 51, no. 2, pp. 141-157. https://doi.org/10.1080/10407790600878585

**Particle Transport in Microchannels.** / Yap, Y. F.; Chai, J. C.; Wong, T. N.; Nguyen, N. T.; Toh, K. C.; Zhang, H. Y.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Particle Transport in Microchannels

AU - Yap, Y. F.

AU - Chai, J. C.

AU - Wong, T. N.

AU - Nguyen, N. T.

AU - Toh, K. C.

AU - Zhang, H. Y.

PY - 2007/5/1

Y1 - 2007/5/1

N2 - Particle transport in microchannel is presented. This article focuses on situations in which the sizes of the particles are comparable to the sizes of the channels. These solid bodies are sufficiently large that momentum is exchanged between the bodies and the flowing fluid. As a result, the solid bodies affect the fluid flow significantly, and vice versa, resulting in a transient process in which the motions of the solid bodies and the flow field are strongly coupled. The flow field and the particulate flow must then be solved simultaneously. The solid bodies are modeled as a fluid constraint to move with rigid body motion. The solid-fluid interface is described using a distance function. For demonstration purposes, the finite-volume method is used to solve the resulting set of governing equations. The present approach is validated against (1) flow around stationary, (2) flow around forced rotating, (3) flow around freely rotating cylinders, and (4) sedimentation of a circular cylinder under gravity. Finally, the motion of particles carried by an incompressible fluid in a microchannel system is studied.

AB - Particle transport in microchannel is presented. This article focuses on situations in which the sizes of the particles are comparable to the sizes of the channels. These solid bodies are sufficiently large that momentum is exchanged between the bodies and the flowing fluid. As a result, the solid bodies affect the fluid flow significantly, and vice versa, resulting in a transient process in which the motions of the solid bodies and the flow field are strongly coupled. The flow field and the particulate flow must then be solved simultaneously. The solid bodies are modeled as a fluid constraint to move with rigid body motion. The solid-fluid interface is described using a distance function. For demonstration purposes, the finite-volume method is used to solve the resulting set of governing equations. The present approach is validated against (1) flow around stationary, (2) flow around forced rotating, (3) flow around freely rotating cylinders, and (4) sedimentation of a circular cylinder under gravity. Finally, the motion of particles carried by an incompressible fluid in a microchannel system is studied.

UR - http://www.scopus.com/inward/record.url?scp=33847143308&partnerID=8YFLogxK

U2 - 10.1080/10407790600878585

DO - 10.1080/10407790600878585

M3 - Article

VL - 51

SP - 141

EP - 157

JO - Numerical Heat Transfer, Part B: Fundamentals

JF - Numerical Heat Transfer, Part B: Fundamentals

SN - 1040-7790

IS - 2

ER -