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≤ Rep ≤300.
| Original language | English |
|---|---|
| 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