Experimental and computational modelling of solid particle erosion in a pipe annular cavity

Slurry erosion of surface imperfections in pipeline systems

“…The presence of a dip (or valley) just downstream of the forward-facing edge (x/r cavity $ 1.2) is evident after 10 h of erosion. This feature is similarly observed at the backward-facing steps of annular cavity flows [4]. Fig.…”

“…Sand erosion experiments in ambient air by Wong et al [4] on a pipe annular cavity with a cavity length (L c ) to pipe diameter ratio of 1.27 showed that the highest erosion rate of material removal occurs on the edge of the forward-facing step when either d 50 ¼ 38 μm or d 50 ¼ 198 μm particles are used. The amount of erosion occurring on the forwardfacing edge of the cavities was normalised with respect to erosion on a cylinder in cross-flow [14] under similar experimental conditions of bulk flow velocity, sand type, sand rate and cumulative sand amount.…”

“…Significant progress in the area has been made since Finnie's [1] seminal work. Recent modelling using computational fluid dynamics (CFD) is showing good promise to understand and predict the detailed features of erosion, especially in complex geometries [2][3][4][5]. Due to manufacturing processes, design, installation processes, material anomalies and process flows, pipe wall surface imperfections are common occurrences in commercial slurry pipelines.…”

“…Table 1 summarises selected examples from the literature of protrusions and cavities in pipe systems. Solid particle erosion frequently occurs on the forward-facing steps and corners of pipe annular cavities [4], on the leading edges of bluff bodies, such as protruding pipes [3] and on the windward face of contraction surfaces (e.g. upstream face of a drill pipe connector [8]).…”

Study on the Flow Characteristics and Erosion Phenomenon of Frac Sleeve by Using a CFD Approach

“…The majority of the previous studies were devoted to material characteristics, while little attention had been paid to the characteristics of fracturing fluid and sand particles. A lot of researches have been conducted on erosion phenomenon in other industrial [10][11][12][13][14][15]. The coupled approach of CFD and Discrete Element Method is used to simulate the solid-liquid two phase flow [16][17][18].…”