Application and experimental validation of a computational fluid dynamics (CFD)-based erosion prediction model in elbows and plugged tees

Chen, Xianghui; McLaury, Brenton S.; Shirazi, Siamack A.

doi:10.1016/j.compfluid.2004.02.003

Cited by 231 publications

(98 citation statements)

References 9 publications

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“…This is presented together with its percentage deviation compared to each previous grid in Table 2. According to Chen et al [13], a deviation (δ) of the maximum erosion value of less than 20% for erosion calculations is sufficient. For this work in order to achieve a higher accuracy, a deviation of about 15% as authoritative is considered.…”

Section: Geometry and Mesh Generationmentioning

confidence: 99%

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Investigation of Hydroabrasion in Slurry Pipeline Elbows and T-junctions

Azimian¹,

Bart²

2014

JEPE

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Abstract:The present study demonstrates the comparison of erosion rate of critical pipeline parts, namely elbow and T-junction which face the maximum erosion in a pipeline and may cause an early damage and failure of the system. CFD (computational fluid dynamics) with an Eulerian-Lagrangian approach coupled with an approved erosion model is applied to visualize the 3-D flow behavior of slurry flow in both parts and to predict the erosion rate and the location of erosion at the internal surfaces. The analysis of slurry erosion is performed in five steps; geometry and grid generation, grid study/refinement, fluid flow solution, solid particles tracking and finally, the erosion calculation. In previous publications in literature considering transportation of gas-solid flows in pipe parts, the application of T-junctions instead of elbows for specified conditions in order to reduce the erosion is recommended. In this article, it is approved that for liquid-solid flows, the Stokes number is reasonably smaller than the values for gas-solid flows. This causes the solid particles tightly couple to the fluid phase and to travel more closely with the fluid streamlines. The effects of important influencing parameters such as feed flow velocity, solid concentration, particle size and shape are investigated in detail in current work. It was found that for liquid-solid flows, the erosion of T-junction for all of the mentioned influencing parameters, due to its geometrical specifications and Stokes number variation in comparison with gas-solid flows, is reasonably higher than erosion of elbow. Due to these findings, in contrary to the gas-solid mixture flows, application of T-junction instead of elbow for liquid-solid flow transportation is not recommended.

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Section: Geometry and Mesh Generationmentioning

confidence: 99%

“…CFD as a modern tool is also applied for erosion predictions in elbows and T-junctions [12][13][14][15]. However, the experimental study and simulation of these parts facing the liquid-solid flows are very limited in literature.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Hydroabrasion in Slurry Pipeline Elbows and T-junctions

Azimian¹,

Bart²

2014

JEPE

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“…In this paper, the erosion rate of BG-13Cr sample was considered to use an erosion sub-model based on which was proposed by Chen et al [8] [9]. And the Erosion is a calculation using Eq.…”

Section: -P2mentioning

confidence: 99%

“…F (α) is angle function which describes the impact angle effect of erosion rate. This function was described by Chen et al [8] as follows:…”

Section: -P2mentioning

confidence: 99%

Erosion of Premium Connection Cross-over Joint in Solid-liquid Flow

Zhao

Cai

Cui

et al. 2015

MATEC Web of Conferences

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“…The selection of an appropriate erosion model which better represents the experimental results was performed by calculating the erosion (material weight loss) of a square shape specimen caused by a hitting vertical water/sand jet for some various operating parameters with four erosion models from literatures [9][10][11][12][13]. The results are then compared with the experimental erosion results of Wang et al [14] which applied a water/sand jet experimental set-up to investigate the effect of influencing parameters on the erosion rate of hard metals.…”

Section: Application Of Grant-tabakoff Erosion Modelmentioning

confidence: 99%

CFD simulation and experimental analysis of erosion in a slurry tank test rig

Azimian¹,

Bart²

2013

EPJ Web of Conferences

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Abstract. Erosion occurring in equipment dealing with liquid-solid mixtures such as pipeline parts, slurry pumps, liquid-solid stirred reactors and slurry mixers in various industrial applications results in operational failure and economic costs. A slurry erosion tank test rig is designed and was built to investigate the erosion rates of materials and the influencing parameters such as flow velocity and turbulence, flow angle, solid particle concentration, particles size distribution, hardness and target material properties on the material loss and erosion profiles. In the present study, a computational fluid dynamics (CFD) tool is used to simulate the erosion rate of sample plates in the liquid-solid slurry mixture in a cylindrical tank. The predictions were made in a steady state and also transient manner, applying the flow at the room temperature and using water and sand as liquid and solid phases, respectively. The multiple reference frame method (MRF) is applied to simulate the flow behavior and liquid-solid interactions in the slurry tank test rig. The MRF method is used since it is less demanding than sliding mesh method (SM) and gives satisfactory results. The computational domain is divided into three regions: a rotational or MRF zone containing the mixer, a rotational zone (MRF) containing the erosion plates and a static zone (outer liquid zone). It is observed that changing the MRF zone diameter and height causes a very low impact on the results. The simulated results were obtained for two kinds of hard metals namely stainless steel and ST-50 under some various operating conditions and are found in good agreement with the experimental results.

show abstract

Application and experimental validation of a computational fluid dynamics (CFD)-based erosion prediction model in elbows and plugged tees

Cited by 231 publications

References 9 publications

Investigation of Hydroabrasion in Slurry Pipeline Elbows and T-junctions

Investigation of Hydroabrasion in Slurry Pipeline Elbows and T-junctions

Erosion of Premium Connection Cross-over Joint in Solid-liquid Flow

CFD simulation and experimental analysis of erosion in a slurry tank test rig

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