Flow Properties of Stable Slurries : (2nd Report, Analysis)

抄録

In 1st report, we reported the discrepancy between the rotational and the capillary viscometers concerning the flow properties of stable slurries. In this paper, this discrepant phenomenon is analyzed from the standpoint that it is due to the concentration distribution of particles in slurries in the circular tube flow and discussed on the experimental results. In the analysis, it is assumed that slurries are stable and composed of rigid spherical particles and Newtonian suspending liquid. It is shown that the concentration distribution is affected by the slurry concentration, the ratio of particle radius to capillary one, the ratio of length to diameter of capillary and Reyonlds number. It is shown too that the additional loss due to the concentration distribution is negative. Next, on the viscometry using the capillary viscometer of non-spherical particle slurries, a practical approach is taken.