Abstract
In this research, the effect of frictional resistance on pressure loss in horizontal plug conveying was investigated. As a result, the ratio of pressure drop by the frictional loss to total loss ranged 70-93% tested conditions. It is also found that wall pressure at the bottom of pipe becomes the maximum due to gravity action. Furthermore, the cross sectional pressure distribution was found to be related to the particle velocity, i.e. as particle velocity becomes larger, wall pressure in circumference direction comes to act equally. Additionally, it was shown experimental values on mean wall pressure approach theoretical value.
