Abstract
Fully developed laminar flows of water-based magneto-rheological (MR) fluids in microtubes at various Reynolds and Hedsrom numbers have been numerically simulated using finite difference method. The Bingham plastic constitutive model has been used to represent the flow behavior of MR fluids. The combined effects of wall roughness and shear yield stress on the flow characteristics of MR fluids, which are considered to be homogeneous by assuming the small particles with low concentration in the water, through microtubes have been numerically investigated. The effect of wall roughness on the flow behavior has been taken into account by incorporating a roughness-viscosity model based on the variation of the MR fluid apparent viscosity across the tube. Significant departures from the conventional laminar flow theory have been acquired for the microtube flows considered.
| Original language | English |
|---|---|
| Pages (from-to) | 1016-1025 |
| Number of pages | 10 |
| Journal | International Communications in Heat and Mass Transfer |
| Volume | 32 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Aug 2005 |
| Externally published | Yes |
Funding
The first author has been supported by The Scientific and Research Council of Turkey (TUBITAK) to conduct this research under NATO B1 international scholarship program. TUBITAK's support is gratefully acknowledged.
| Funders | Funder number |
|---|---|
| Scientific and Research Council of Turkey | |
| TUBITAK | |
| North Atlantic Treaty Organization |
Keywords
- Bingham plastic
- ER fluid
- Laminar flow
- Microchannel
- Microtube
- MR fluid
- Wall roughness