A graphical method for analyzing liquid-solid systems and an experimental process for obtaining basic data for said analysis to be applicable to one dimensional vertical flow are presented.
1) The graphical method proposed by Kynch (1952) and Lighthill Whitham (1955) for kinematic waves have been modified, taking into account the influence which the liquid flow rate and the mean space-velocity of solid particles have on each other. There are given also several examples as are of use in the practical solution of this kind of problems.
2) As a new experimental process for obtaining a flow-concentration curve on which the graphical analysis is based, the liquid-fluidized-bed method is investigated. Experimental examinations in batch and continuous settling have proved that the method holds good.