Numerical investigation of mass loading effects on elbow erosion

Multi-fluid approach for the numerical prediction of wall erosion in an elbow

“…When increasing the solid mass flow rate, the secondary erosion regions disappear due to the inter particle collisions which is in agreement with the simula tions of Duarte et al [9]. The maximum erosion rate remained constant when solid mass flow rate was varied from 0.208 × 10 −3 to 0.208 × 10 −1 kg/s, but then increased at 0.208 kg/s, which contradicts the re sults of Duarte et al [9]. The authors explained that the particles form a dynamic layer near the wall and the sliding of this dynamic particle layer may be the major reason for the increase of erosion rate at the highest solid mass flow rate.…”

“…Xu et al [12] investigated the effect of solid mass flow rate and coupling method on erosion in an elbow. When increasing the solid mass flow rate, the secondary erosion regions disappear due to the inter particle collisions which is in agreement with the simula tions of Duarte et al [9]. The maximum erosion rate remained constant when solid mass flow rate was varied from 0.208 × 10 −3 to 0.208 × 10 −1 kg/s, but then increased at 0.208 kg/s, which contradicts the re sults of Duarte et al [9].…”

“…It was also observed in the experiments of Deng et al [20] and Macchini et al [21] that the erosion rate decreases when the solid volume concentration increases. Numerically, Duarte et al [9,17] evaluated one , two and four way coupling modelling for different mass loadings. The secondary erosion regions tend to disappear when increasing the mass loading with four way coupling, due to the effects of inter particle collisions.…”

Numerical analysis of particle erosion in the rectifying plate system during shale gas extraction

“…Pei et al simulated the erosion in pipe elbows and have given the position of maximum erosion; the abrasive terms in erosion simulation are proved necessary, and the particle impact angles are generally low in transportation of dense gas . Peng et al studied the particle trajectories in erosion simulation by combining eight erosion models and two rebound models, and have found the prediction of the maximum erosion zone in this paper; Laín et al studied the bend erosion with the approach of Euler/Lagrange and found that the roughness of wall can reduce the penetration ratio; Zeng et al used the CFD‐DEM coupling way to study the motion of sulfur particles in the gas flow; Liu et al used CFD to study the diffusion rule of two different oils in tee pipe; Duarte et al studied the relationship between collision of interparticles and the elbow erosion with the numerical simulation; Vieira et al combined the PIV technique and the sand erosion experiment, then simulated the erosion and gave the prediction of erosion; in the study of Duarte et al the particle erosion in the pipe elbow was investigated, and the conclusion indicated that the collision of inner particles can effectively reduce the erosion in the elbow.…”

Erosion regularities of gas pipelines based on the gas-solid two-way coupling method

“…Meng and Ludema [2] summarized the previous literatures about the particle erosion and found that there were 33 important parameters that influence erosion. Most of the currently available studies on pipe erosion for gas-solid flow concentrate on the erosion resulting from the changes of limited parameters using a specific erosion model [3,4], rather than systematically analyzing the correlation between the main parameters affecting the erosion rate. Some experimental studies [5,6] illustrated that the most severe erosion location in the bend occurred on the outermost side of the elbow.…”