VELOCITY DISTRIBUTIONS IN THE FLOW OF SOLID PARTICLES IN AN INCLINED OPEN CHANNEL

摘要: The velocity of solid particles flowing in an inclined open channel which the bottom plate was covered with very rough sandpaper measured for three kinds particle. Except region near plate, distribution normal to appeared be linear. gradient that almost independent thickness particle layer and increased as slope became steep. These observed distributions were analyzed based on variational principle, by could obtained solution minimized a certain integral consisting several energy terms. It found such analysis explain main feature flow channel, following relation between stress rate deformation obtained. τyz=kτy-kμy(dvz/dy) also critical inclination angle anticipated analysis, corresponded repose.