[Purposes]Aiming at the problem of erosion of sand-bearing fracturing fluid in hydraulic frac-tured high pressure pipe sink,the influencing factors of elbow erosion are analyzed and the optimization method is put forward to reduce the degree of erosion of elbow.[Methods]Using FLUENT software,based on DPM model and Realizable k-ε turbulence model,the erosion simulation analysis of 90 ° el-bow is carried out according to the actual working conditions.[Findings]The results show that the new type of elbow structure can effectively reduce elbow erosion wear,and the maximum erosion rate is 1.86×10-5 kg/(m2·s)under the same working condition,which is 41.6%lower than that before optimization.[Conclusions]Through analysis,it can be seen that changing the shape or increasing the diameter of the elbow can effectively reduce the erosion degree of the elbow.
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