Coupling Analysis of Fluid-Structure Interaction and Flow Erosion of Gas-Solid Flow in Elbow Pipe

Zhu, Hongjun; Zhao, Hongjing; Pan, Qian; Li, Xue

doi:10.1155/2014/815945

Cited by 6 publications

(6 citation statements)

References 13 publications

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“…The solid particle was the second phase, there was no phase transition. (2) The solid particles of the incoming flow were evenly distributed in liquid water.…”

Section: Numerical Calculation Methods Of Elbow Jetmentioning

confidence: 99%

Research on the influence of elbow erosion characteristics based on bionic earthworm dorsal pore jet

Mou

Zhang

et al. 2019

Science Progress

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Based on the biological characteristics of earthworm, the dorsal pore jet parameters were analyzed to establish elbow erosion model. The discrete phase model and standard k-ε turbulence model were used to carry on numerical simulation of the erosion characteristics and study the mechanism of improving elbow erosion characteristics. The results showed that the most serious erosion area was the elbow lower surface, while bionic earthworm dorsal pore jet could significantly reduce the erosion rate of this area, thereby reducing the overall erosion rate. When the jet velocity was the same, the smaller the jet distance, the lower the erosion rate would be. With the increase of the jet velocity, the erosion rate decreased first and then increased. When the jet distance was 0.5 times the elbow diameter and the jet velocity was 0.3 times the flow velocity, the erosion rate was the lowest (decreased by 79.29%). When the jet velocity was less than 0.5 m·s−1, low-velocity strips formed at elbow lower surface due to the jet and reduced the kinetic energy of the solid particles near the wall; when the jet velocity was greater than 0.2 times the flow velocity, vortex cushion effect formed, therefore reduced the erosion rate significantly.

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“…The solid particle was the second phase, there was no phase transition. (2) The solid particles of the incoming flow were evenly distributed in liquid water.…”

Section: Numerical Calculation Methods Of Elbow Jetmentioning

confidence: 99%

Research on the influence of elbow erosion characteristics based on bionic earthworm dorsal pore jet

Mou

Zhang

et al. 2019

Science Progress

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“…u = u at the interface of fluid-structure (12) σ . n = Г .n (13) where, σ is the Cauchy stress tensor, n is the unit normal, and Г is the real stress.…”

Section: Figure 1 Mesh For the Pipe And Fluid Domainmentioning

confidence: 99%

“…The FSI method is used for the analysis to calculate deformation. They concluded that erosion rate and deformation are connected to structural changes and inlet conditions [13]. In a study, a pipe flow is studied by using FSI to observe local damages.…”

Section: Introductionmentioning

confidence: 99%

Farklı Isı ve Basınç Koşulları Altında Düz Bir Boru İçin Tek Yönlü Akışkan-Yapı Etkileşimleri Analizi

CANBOLAT

2023

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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Numerical studies on stress, deformation, and damages due to fluid flow have been highly carried out using Fluid-Structure Interaction (FSI) in recent years. FSI is highly efficient in investigating a solid domain deformed by the fluid flow. In this study, a one-way fluid-structure interaction study is performed by a straight pipe under different pressure and thermal conditions. Here, the thermophysical properties of the fluid and mechanical properties of the solid domain can be subjected to change during fluid flow. An aluminum straight pipe with a 1 mm wall thickness is operated under 1 Bar, 5 Bar, and 10 Bar with three different surface temperatures -10ºC, 20ºC, and 50ºC. This study aims to investigate the structural variation of aluminum by the temperature and pressure change of operating fluid in the pipe. Variation of thermophysical properties of fluid by heated pipe surface is integrated into the numerical analysis by generated functions. Numerical analysis showed that the variation of temperature in operating fluid highly affects the fluid characteristic and the structural response of the solid domain by different temperatures. An increase in the operating pressure caused maximum deformation to approximately %100 from 1 Bar to 5 Bar, and approximately %120 from 1 Bar to 10 Bar for the adiabatic process as expected but in the heating conditions stress is nearly three times higher than cooling conditions. As a result, one-way FSI solutions are highly effective in investigating the deformed solid domain as a result of flow, thermal, and operating conditions.

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“…With the deepening degree of erosion, the solid particles will eventually lead to pipeline leakage damage, influencing the environment and people's life [3]. Actual damaged pipelines are shown in Figure 1 [4]. Statistically, gas transmission stations in a given area, over six years, have undergone pipe perforations five times and serious pipe wall thinning three times.…”

Section: Introductionmentioning

confidence: 99%

“…(a) (b) Figure 1. Actual damaged pipelines [4] (a) a failure of bend after repairing; (b) a failure of bend in a gas pipeline.…”

Section: Introductionmentioning

confidence: 99%

Prediction of the Maximum Erosion Rate of Gas–Solid Two-Phase Flow Pipelines

Lian

et al. 2018

Energies

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Erosion is one of the important reasons for the thickness decrease and perforation of the pipe walls. Understanding the gas–solid two-phase flow pipe erosion mechanism is the basis for monitoring pipe erosion. According to the structural characteristics and working conditions of the gas–solid two-phase flow pipeline in a gas transmission station, a gas–solid two-phase flow pipe erosion finite element model was established and validated by combining it with field test data. Then, the gas–solid two-phase flow pipeline erosion characteristics under different pressures, solid contents, throttle valve openings, and pipe diameters were studied. On this basis, a maximum erosion rate prediction equation was put forward after verification by using actual wall thickness detection data. Results show the following: (1) The absolute error of the maximum erosion rate between the model results and the test datum is ≤10.75%. (2) The outer cambered surface of the bend after the throttle valve is the most seriously eroded areas. (3) The maximum erosion rate increases with pressure, solid content and throttle valve opening increasing, but, along with the change of the pipe diameter, the maximum erosion rate increases at first and then decreases with pipe diameter increasing for throttle valve openings of 20% and 30%, and it decreases with pipe diameter increasing for a throttle valve opening of 50%. (4) A maximum erosion rate prediction equation, involving pressure, solid content, opening of the throttle valve, and pipe diameter, is proposed and is verified that the absolute percentage error between the prediction equation calculation results and the field test datum is ≤11.11%. It would seem that this maximum erosion rate prediction equation effectively improves the accuracy of predicting the gas–solid two-phase flow pipe erosion rate in a gas transmission station.

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Coupling Analysis of Fluid-Structure Interaction and Flow Erosion of Gas-Solid Flow in Elbow Pipe

Cited by 6 publications

References 13 publications

Research on the influence of elbow erosion characteristics based on bionic earthworm dorsal pore jet

Research on the influence of elbow erosion characteristics based on bionic earthworm dorsal pore jet

Farklı Isı ve Basınç Koşulları Altında Düz Bir Boru İçin Tek Yönlü Akışkan-Yapı Etkileşimleri Analizi

Prediction of the Maximum Erosion Rate of Gas–Solid Two-Phase Flow Pipelines

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