磁性流体によって駆動される円管内液柱の運動

概要

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The motion of a liquid column in a circular tube, driven by the motion of a magnetic fluid under an oscillating magnetic field in the axial direction, is studied experimentally. Nondiluted hydrocarbon-based magnetic fluid and a kind of fluorocarbon are employed as working fluids. The displacement of the magnetic fluid column becomes larger than that reported in the previous work. However, the magnetic fluid column is separated. from the driven liquid at the interface in the frequency range where the displacement is expected to increase. For a U-tube of constant diameter, the time variation of displacement shows a distorted waveform in the lower frequency range due to smaller hydraulic loss, although the displacement is considerably large even in the case of rather weak input current to the solenoid. Numerical analyses are also carried out using conditions similar to those of the experiments. The predicted results agree well with experimental data in the case of no separation at the interface.
一般社団法人日本機械学会の論文
1995-01-25