The effects of wall roughness on erosion rate in gas–solid turbulent annular pipe flow

Jafari, Mahdi; Mansoori, Z.; Saffar‐Avval, Majid; Ahmadi, Goodarz

doi:10.1016/j.powtec.2014.11.024

Cited by 15 publications

(4 citation statements)

References 27 publications

(31 reference statements)

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“…Clark [6] illustrated that the solid particle erosion depends on particle properties, metallic properties, geometry, type of flow and flow pattern. The erosion mechanism in both ductile and brittle materials was extensively studied by Finnie [8,9], Jordan [15], Hutchings and Winter [11], Leavy [18], Mansouri [20] and others. For ductile material, the erosion occurs by scraping mechanism or plastic deformation mechanism.…”

Section: Introductionmentioning

confidence: 99%

Solid particle erosion in the sudden contraction of raw water pipeline

Amori¹,

Al-Salmani²

2022

Diagnostyka

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The steady 3-D raw water turbulent flow is numerically investigated. This flow is formed of solid silica sand (quartz) carried by water in stainless steel pipe. The flow in a straight pipe and flow in a pipe with a sudden contraction are analyzed using a two-way coupled Eulerian-Lagrangian approach. Erosion rate is estimated by Oka erosion model combined with the constant coefficient of restitution. The effect of solid particles mass flow rate, inlet velocity, particle diameter, internal pipe diameter, orientation, contraction coefficient, and wall pipe contraction angle on erosion rate are examined. The predicted erosion is distributed homogenously for straight pipe, while the step wall area of the contraction is the most eroded part. The erosion rate increases with the increase of solid particles diameter, flow rate, inlet velocity, and decreasing pipe diameter. Iit is found that the erosion is limited till the particle diameter reaches 500 µm then it starts to increase. The erosion rate increases with decreasing contraction coefficient and step wall angle. When the step wall angle decreased to 300, the erosion rate is reduced by 30 times that for 900. So, decreasing step wall angle can be considered as a geometrical solution to reduce erosion rate.

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Section: Introductionmentioning

confidence: 99%

Solid particle erosion in the sudden contraction of raw water pipeline

Amori¹,

Al-Salmani²

2022

Diagnostyka

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“…Also, more detailed models for particle-rough wall interactions can support more accurate CFD-based erosion studies used to optimize the design of piping equipment with respect to erosion or to estimate locations in pipelines that are most prone to erosion [16,17,18,19,20,21].…”

Section: Introductionmentioning

confidence: 99%

Modelling of three-dimensional particle rebound from an anisotropic rough wall

Radenkovic

Simonin

2021

Powder Technology

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“…Chen et al [8] investigated the erosion in a pipe elbow caused by 300m diameter particles carried with a liquid by employing a discrete element method model. Similarly, Jafari et al [9] conducted a parametric study on the effect of annular pipe dimensions on the erosion in the pipe due to particle collisions with particle interactions modeled.…”

Section: Introductionmentioning

confidence: 99%

Estimation of particle impact based erosion using a coupled direct particle — Compressible gas computational fluid dynamics model

Florio¹

2017

Powder Technology

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A comprehensive two-phase compressible gas-solid particle computational fluid dynamics-based modeling method has been developed and applied to study the erosion and fouling along flow path surfaces due to particle impact. Extending upon methods to predict particle interaction phenomena which incorporate rolling, twisting, sliding, and adhesion forces to capture conditions that frequently occur as particle laden flow passes over a flow path surface, the simulation methods have been specifically designed for high particle concentrations and large particle sizes. In the developed technique, individual particles are directly discretized in the computational mesh, and the particles move through the fluid, and interact with the flow, flow path boundaries, and other particles. With particle motion calculated from the direct two-phase flow simulations, the distribution and intensity of the mass loss or erosion conditions along a flow path surface resulting from particle impact is predicted. The developed method was applied to study the erosion of an aluminum wall due to impacting sand particles of different sizes, impact velocities, and counts. A more fluid-like particle motion and distribution upon impact were found as the particle size decreased. The method was also implemented to examine the erosion that develops for three common flow configurations which force particle-flow path surface interactions: a diverging/converging flow path, a bypass flow path, and a baffle configuration. These applications demonstrate the utility of the model to explore and better understand the relationships between the geometry, the flow, the particles, and the adhesion and erosion that develop as particle laden flow moves over the flow path surfaces.

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The effects of wall roughness on erosion rate in gas–solid turbulent annular pipe flow

Cited by 15 publications

References 27 publications

Solid particle erosion in the sudden contraction of raw water pipeline

Solid particle erosion in the sudden contraction of raw water pipeline

Modelling of three-dimensional particle rebound from an anisotropic rough wall

Estimation of particle impact based erosion using a coupled direct particle — Compressible gas computational fluid dynamics model

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