Experimental resistance measurement on solid-liquid two-phase flow in microchannel

Yonghong Liu1,2, Je-Eun Choi2, Masahiro Takei2

1 College of Electrical Engineering Yanshan University China. liuyh@ysu.edu.cn

2 College of Science and Technology Nihon University Japan

ABSTRACT

Monitoring the multiphase flow behaviour in microchannel is very important in many medical and biochemical process. The precise flow rate control and well-defined channel geometries make it possible for us to make detailed investigation on microflow phenomena. This paper aims at the measurement of resistance of different cross-section in a microchannel to detect the liquid solid two- phase flow behaviour of the microfluids. Experimental results show that the electrical resistance of the microfluids can be significantly altered by the presence of non-conductive microsphere in liquid solid two-phase flow. At the same time, the flow pattern at different region of the microchannel can be estimated from spatial resistivity distribution in the cross-sections.

Keywords resistance measurement, two-phase flow, particle concentration, microchannel