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The repair costs of erosion damage caused by solid particle impingement from transporting slurries and other particle-laden liquids in pipes can be extremely high. In the absence of accurate predictive models, routine monitoring of the pipe wall thickness or the use of sacrificial coupons are required to warn of erosion damage or impending loss of containment. Apart from advantages for plant maintenance,...
Computational models for the impact velocity and impact angle in a bend have been successfully applied to the flow field and validated by electrical resistance tomography (ERT) to confirm the position of particle burdens. Particle impact parameters from this work have been used as inputs to erosion models to predict wall wastage rates in a R c /D=1.2 bend and a upstream straight pipe section...
Elbows, that are integral part of piping systems, are vulnerable in erosive environments. Plugged tees are used in industrial practice to replace elbows when erosion is expected. However, it remains unclear that plugged tees reduce erosion. Thus, this paper investigates the relative erosion severity between plugged tees and elbows for dilute gas/solid two-phase flow where the pressure is close to...
Erosion equations are usually obtained from controlled experimental tests for solid particles carried in a gas or liquid flow. These equations are then applied to estimate the erosion damage resulting from solid particle impacts for cases of practical interest. It is well known that the particle impact speed and impact angle affect the erosion process and are used as parameters in most erosion equations...
The effect of particle hardness on the erosion of stainless steel has been studied with fine particles at low impacting velocities with two experimental apparatuses, submerged configuration with slurry mix and mist flow test with solid particles entrained in the droplets. Particle concentration was 1% by mass and the tests have been run for 72h. The testing particles include iron powder, calcite,...
Solid particle erosion is of great importance to many industries including oil and gas production, drilling, process and transportation of minerals including oil sands. The particles that may cause erosion are of various sizes, shapes and hardnesses. These particles may impact the surface at various speeds and angles, and the influence of these parameters is characterized to some extent in the literature...
Although erosion under multiphase flow conditions can be observed frequently, due to its inherent complex nature, it has received much less attention compared to that in single phase flow. In the present study, a Computational Fluid Dynamics (CFD) model was adopted to analyze air-water-sand flow in a Horizontal-Horizontal (H-H) standard elbow with a diameter of 76.2mm (r/D=1.5). For this configuration,...
Computational Fluid Dynamics (CFD) based erosion prediction procedures are carried out to predict erosion for a submerged liquid jet impingement geometry. 3-D modeling with different near wall treatments are employed to simulate the wall bounded turbulent jet flow. Discrete Phase Model (DPM) is applied to track particles and obtain particle impact characteristics. Erosion is calculated using typical...
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