Abstract
This paper is concerned with the bed-load transportation from a trough in a horizontal wind tunnel. The air velocity employed was between 8 and 15m/s, and the bed-load consisted of glass beads. To study the effect of flow disturbance, a plate was installed at various angles and heights to the tunnel bottom upstream of the trough. In some experiments, the rate of air flow was altered periodically between two set values. The transient air flow influenced the bed-load transportation somewhat. The reverse flow caused by the plate has been found to have a significant effect on the bed-load transportation.
