Abstract
It is difficult to apply optical techniques to the velocity measurement of the fluid-particle flows, especially when the volume fraction of the particle becomes high. In the present paper, the NMR (Nuclear Magnetic Resonance) measurement is applied to dense liquid-solid flows. The velocity distribution of the liquid-solid flow is measured non-invasively by the phase method. It is verified that the velocity distribution of the laminar and the turbulent flow for the single phase flow agrees with the theoretical solution or the empirical correlation. The velocity distribution of the turbulent liquid-solid flow is successfully measured and compared with the wall law.
