The behaviour of gas inclusions in a magnetic fluid in a non-uniform magnetic field

The findings of the experimental research of a phased air cavity capture in a flat channel with a magnetic fluid located along the axis of the annular magnet influenced by the changing in sign magnetic field are discussed. The research was carried out with four magnetic fluids with the magnetic phase concentrations of 1.93%; 2.70%; 4.34%; 9.08%. The analysis of the obtained results is presented within the framework of the electrodynamic model of “low magnetic bodies” based on the development of the system of isolines of the module of the magnetic field intensity. The provided data, first, clarify the conclusions of the previous interpretation of the air cavity capture with an opaque magnetic fluid column, and second, can be useful to solve practical issues of microhydraulics.