Abstract
This paper presents simulated and experimental results on the flow induced in a closed channel by a magnetic fluid (i.e. magnetorheological (MR) fluid and a ferrofluid) plunger. The results are used to assess the feasibility of using such fluids for development of milli-micro-scale pumps. The magnetic fluid plunger acts as a piston that is moved along the channel by an array of drive coils (or by a permanent magnet) to displace an immiscible fluid. The excited drive coils produce a traveling magnetic field wave inside the channel which in turn produces magnetic dipoles in the magnetic fluid. The dipoles react with the traveling wave leading to a Kelvin force that drags the magnetic fluid plunger through the channel. The flow rates achievable in this approach are a function of channel geometry, magnetic fluid properties, plug size, frequency of the current passing through the drive coils, and the location of the drive coils along the channel. Representative results of the analysis of the effect of these parameters on the flow rates are presented here. While the simulations indicate that both, MR and ferrofluids may be used for fluid actuation in the selected geometry, the experiments validated only the MR fluid option.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 7643 |
| Edition | PART 1 |
| DOIs | |
| State | Published - 2010 |
| Event | Active and Passive Smart Structures and Integrated Systems 2010 - San Diego, CA, United States Duration: Mar 8 2010 → Mar 11 2010 |
Other
| Other | Active and Passive Smart Structures and Integrated Systems 2010 |
|---|---|
| Country | United States |
| City | San Diego, CA |
| Period | 3/8/10 → 3/11/10 |
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Keywords
- Channel flow
- Ferrofluid
- MR Fluid
ASJC Scopus subject areas
- Applied Mathematics
- Computer Science Applications
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Magnetic fluid driven flow in a capillary channel. / Bruno, Nickolaus M.; Ciocanel, Constantin.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7643 PART 1. ed. 2010. 764315.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Magnetic fluid driven flow in a capillary channel
AU - Bruno, Nickolaus M.
AU - Ciocanel, Constantin
PY - 2010
Y1 - 2010
N2 - This paper presents simulated and experimental results on the flow induced in a closed channel by a magnetic fluid (i.e. magnetorheological (MR) fluid and a ferrofluid) plunger. The results are used to assess the feasibility of using such fluids for development of milli-micro-scale pumps. The magnetic fluid plunger acts as a piston that is moved along the channel by an array of drive coils (or by a permanent magnet) to displace an immiscible fluid. The excited drive coils produce a traveling magnetic field wave inside the channel which in turn produces magnetic dipoles in the magnetic fluid. The dipoles react with the traveling wave leading to a Kelvin force that drags the magnetic fluid plunger through the channel. The flow rates achievable in this approach are a function of channel geometry, magnetic fluid properties, plug size, frequency of the current passing through the drive coils, and the location of the drive coils along the channel. Representative results of the analysis of the effect of these parameters on the flow rates are presented here. While the simulations indicate that both, MR and ferrofluids may be used for fluid actuation in the selected geometry, the experiments validated only the MR fluid option.
AB - This paper presents simulated and experimental results on the flow induced in a closed channel by a magnetic fluid (i.e. magnetorheological (MR) fluid and a ferrofluid) plunger. The results are used to assess the feasibility of using such fluids for development of milli-micro-scale pumps. The magnetic fluid plunger acts as a piston that is moved along the channel by an array of drive coils (or by a permanent magnet) to displace an immiscible fluid. The excited drive coils produce a traveling magnetic field wave inside the channel which in turn produces magnetic dipoles in the magnetic fluid. The dipoles react with the traveling wave leading to a Kelvin force that drags the magnetic fluid plunger through the channel. The flow rates achievable in this approach are a function of channel geometry, magnetic fluid properties, plug size, frequency of the current passing through the drive coils, and the location of the drive coils along the channel. Representative results of the analysis of the effect of these parameters on the flow rates are presented here. While the simulations indicate that both, MR and ferrofluids may be used for fluid actuation in the selected geometry, the experiments validated only the MR fluid option.
KW - Channel flow
KW - Ferrofluid
KW - MR Fluid
UR - http://www.scopus.com/inward/record.url?scp=77953514267&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77953514267&partnerID=8YFLogxK
U2 - 10.1117/12.858564
DO - 10.1117/12.858564
M3 - Conference contribution
AN - SCOPUS:77953514267
SN - 9780819480583
VL - 7643
BT - Proceedings of SPIE - The International Society for Optical Engineering
ER -