## Abstract

Drag and lift forces acting on a spherical bubble in a homogeneous linear shear flow were numerically investigated by means of a three dimensional direct numerical simulation based on a marker and cell (MAC) method. The effects of fluid shear rate and particle Reynolds number on drag and lift forces acting on a spherical bubble were compared with those on an inviscid bubble. The results show that the drag force acting on a spherical bubble in a linear shear flow increases with shear. The behavior of the lift force on a bubble is quite similar to that on an inviscid bubble, but the effects of fluid shear rate on the lift force acting on a spherical bubble in the linear shear flow become bigger than that acting on an inviscid bubble in the particle Reynolds number region of 1≤ Re_{p} ≤300.

Original language | English |
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Pages (from-to) | 273-279 |

Number of pages | 7 |

Journal | Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B |

Volume | 74 |

Issue number | 2 |

DOIs | |

Publication status | Published - 2008 Feb |

## Keywords

- Drag and lift forces
- Flow outside and inside a bubble
- Numerical simulation

## ASJC Scopus subject areas

- Condensed Matter Physics
- Mechanical Engineering