Numerical investigation of the location of maximum erosive wear damage in elbow: Effect of slurry velocity, bend orientation and angle of elbow

Abstract

A numerical simulation of fluid transportation process was carried out focused on the investigation into predicting the location of the puncture point location in elbow. The kinematics and trajectory of the discrete particles as well as the particle-particle interaction were described by discrete element method (DEM) while the hydrodynamic model of the fluid phase was based on the volume-averaged Navier-Stokes equations, and a fluid density-based buoyancy model was adopted to calculate the solid-fluid interaction force. In this paper, the spatial distribution of particle-wall interaction force was calculated and corresponded to the wear pattern in the elbow, the puncture point locations have been observed. In particular, the influences of slurry velocity, bend orientation and angle of elbow on the puncture point location were discussed.

Numerical Analysis of Flow Erosion on Sand Discharge Pipe in Nitrogen Drilling

“…Sand particles during their travel along an elbow will have impact at a certain angle with high rate, damaging the target surface. Erosion in bends has been experimentally or numerically analyzed by several researchers [10][11][12][13]. And a few empirical or semiempirical formulas have been developed to predict the erosion rate of elbows in gas-solid flow [14,15].…”

A GPU-based discrete element modeling code and its application in die filling

“…Among the most commonly used interaction laws are the 'Hard' contact law based on conservation of momentum [33], linear law [34,35] and the nonlinear law [36][37][38] as adopted in this study. The calculation of interaction force is not necessary in the 'Hard' contact models.…”

Features of distribution of temperature along the length of oil pipeline

“…However, as it is shown in [1], one of determining factors of fluid flow (oil, water, gas) such as oil viscosity in a pipeline is not considered. The value of this factor is also reinforced by the fact that in real conditions it is not oil, which was the subject of research by the authors of the works [1,3,[5][6][7][8][9][10][11][12][13], but a much more complex oil emulsion with a gas mixture flows inside a pipeline from oil production wells to an oil treatment unit. At the same time, flow of mixture and gas in comparison with oil flow leads to additional increase in λ value and fr h consequently.…”