关键词: 含砂原油, 45°弯管, 冲蚀磨损, 固液多相流, CFD模拟

Abstract: In order to study the erosion and wear of sand⁃bearing crude oil pipeline on elbow, the Euler⁃DPM bidirectional coupling model was established by using CFD analysis software.By changing the inlet flow rate, particle mass flow rate, particle diameter and other conditions, the flow field distribution and simulation were carried out with 45° elbow as the research object. The results show that the maximum wear rate increases exponentially with the increase of inlet jet velocity, and the velocity coefficient is 2;under the conditions of constant inlet flow rate and particle size, the maximum erosion wear rate increases linearly with the increase of discrete phase mass flow rate, and the slope is 1.633; the other variables are constant, the particle size is between 50～350 μm, and the maximum wear rate increases with the particle size. The maximum wear rate kept below 3×10－9 kg/(m2·s).When the particle diameter was larger than 350 μm, the maximum wear rate increased rapidly, and the maximum value was 12×10－9 kg/(m2·s).

Key words: Sand containing crude oil, 45 degree bend, Erosion wear, Solid?liquid liquid multiphase flow, CFD simulation