Abstract
Drag control allows energy saving, noise reduction and thus heat control. However the only mean to attain it is through Active feedback control system. This research focuses on magnetic fluid because its characteristics are dramatically changed by magnetic field control and it is possible to reduce the pipe friction. In this article, a study of the effect of external magnetic field control on magnetic fluid. Pressure difference and flow rate measurements have been conducted under different Reynolds numbers and non-uniform magnetic field. The experiments showed a drop of the pipe friction coefficient which goes up to 9.9 percent in the transition region (Re = 2770). Yet, this phenomenon vanishes at higher Reynolds number.
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