抄録
This paper reports on numerical analysis, by use of discrete phase model (DPM). This is helpful to specify the cause of wear occurring with a ship's piping system. It has occurred, during trials, that the flow in the pipe has eroded the coated inside wall of pipe bends. These damage occurred over a short time. The cause was thought to be slurry erosion, and not corrosion. The seawater often contains sand particles. Therefore, the DPM simulations and experiments were conducted on a mixed flow with sand particles, past the constrictions created by bends in the pipe. Comparing the experiments with the DPM simulations, the actual damage by the sand particles was found to be on the same area predicted by the DPM simulations. We consider the DPM simulation is able to clarify that the damage is caused by slurry erosion.
