磁性流体乱流の磁場印加による流動構造に関する実験的研究

抄録

Change of the flow structure in the turbulent magnetic fluid flow by applying magnetic field was investigated experimentally. Measurements of the velocity distribution and Reynolds shear stress distribution were performed by Ultrasonic Velocity Profiling (UVP) method. The flow velocity of the magnetic fluid flow increases at the duct center but decreases in the near wall region by applying magnetic field. Moreover, the Reynolds shear stress is suppressed by applying magnetic field. This suppressed Reynolds shear stress becomes large in excess of that without magnetic field in the downstream of magnetic field region, and then it recovers to the first state.