Analytical Modeling and Optimization for a Microvalve Actuated by Magnetic Fluid

Author

Wu Jian ; Liu Tonggang

Author_Institution

Sch. of Mechatron. Eng., China Univ. of Min. & Technol., Xuzhou, China

fYear

2013

fDate

29-30 June 2013

Firstpage

250

Lastpage

252

Abstract

A microvalve actuated by magnetic fluid and electromagnets drive is presented. The working principle of this microvale is using a volume of magnetic fluid driven by four electromagnets as a spool. By changing the on/off order of the electromagnets, the direction of liquid flow can be changed, and the flow rate can be controlled by adjusting the electricity. A detailed description of the design has been introduced and modeled by ANSYS software. The influence of magnetic field strength to sectional area is analyzed, the simulated result shows that 40mT of magnetic field is optimization. The influence of magnetic field strength to flow rate is analyzed both, the simulation result shows that with the change of magnetic field strength, the size of channel formed by magnetic fluid and the wall of pipeline is changing instantly, and the flow rate of liquid will also be changed.

Keywords

electromagnets; flow control; magnetic field effects; magnetic fluids; microfluidics; microvalves; optimisation; pipelines; ANSYS software; analytical modeling; channel size; electromagnets; flow rate; magnetic field strength; magnetic fluid; microvalve; optimization; pipeline wall; Coils; Electricity; Magnetic fields; Magnetic liquids; Microvalves; Pipelines; analysis; flow rate control; magnetic fluid; microvalve; optimization;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Manufacturing and Automation (ICDMA), 2013 Fourth International Conference on

Conference_Location

Qingdao

Type

conf

DOI

10.1109/ICDMA.2013.59

Filename

6597978