Investigation of erosion behavior of 304 stainless steel under solid–liquid jet flow impinging at 30°

Zhao, Yanlin; Tang, Chunyan; Ye, Jun; Zeng, Zi-Hua; Dong, Shuangshi

doi:10.1007/s12182-020-00473-7

Cited by 25 publications

(12 citation statements)

References 46 publications

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“…The simulation results indicated that, as the particle mass loading increases, the effectiveness of plugged tee compared to the standard elbow increases, and influence of particles interaction with flow and particle collision cannot be neglected. Zhao et al (2020) used dense grid by one-way coupling of solid phase to simulate the single-phase impinging jet due to its dilute distribution, and the simulation results agreed well with experiments. These studies have promoted the development of CFD-based erosion prediction technology; however, there is no research on the impact of inter-particle collision on the erosion behavior.…”

Section: Introductionmentioning

confidence: 56%

Impact of inter-particle collision on elbow erosion based on DSMC-CFD method

Sun

Cao

2021

Pet. Sci.

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In this work, computational fluid dynamics (CFD) is used to study elbow erosion due to a gas–solid two-phase flow. In particular, the direct simulation Monte Carlo (DSMC) method is used to study the impact of inter-particle collision on the erosion behavior. The two-way coupled Euler–Lagrange method is used to solve the gas–solid flow, and the DSMC method is used to consider the collision behavior between particles. The effects of key factors, such as the particle concentration distribution and inter-particle collision, on the erosion ratio are evaluated and discussed. The effectiveness of the method is verified from experimental data. The results show that the inter-particle collision significantly influences the particle movement path and erosion ratio. When the inter-particle collision is considered, the maximum erosion position is offset. The erosion model proposed by Oka et al., who used the DSMC method, agrees best with the experimental data, and the average percentage error decreases from 39.2 to 27.4%.

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Section: Introductionmentioning

confidence: 56%

Impact of inter-particle collision on elbow erosion based on DSMC-CFD method

Sun

Cao

2021

Pet. Sci.

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“…The difference between two-way coupling and one-way coupling suggested that two-way coupling did have little effect on the particle distribution for the dilute phase . In this work, the particle volume fraction was α s = 0.5% and very dilute so that one-way coupling was enough to investigate such two-phase flow. , In addition, particle–particle interaction was ignored due to the dilute phase considered . The flow field was simulated and verified to make sure its accuracy and particles were introduced in it.…”

Section: Numerical Modeling Methodsmentioning

confidence: 93%

“…25 the particle volume fraction was α s = 0.5% and very dilute so that one-way coupling was enough to investigate such two-phase flow. 59,63 In addition, particle−particle interaction was ignored due to the dilute phase considered. 64 The flow field was simulated and verified to make sure its accuracy and particles were introduced in it.…”

Section: Numerical Modeling Methodsmentioning

confidence: 99%

Numerical Investigation of Particle Suspensions in a Liquid–Solid Stirred Tank with Baffles

Wang

Zhao

2021

Ind. Eng. Chem. Res.

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Stirred vessels have been widely used in the chemical and process industries, while particle suspensions in a liquid−solid stirred tank with baffles have little been studied. In this work, a particle suspension in a standard stirred tank driven by a Rushton turbine was simulated using large eddy simulation coupled with the Lagrangian particle tracking technique. The rotation speed was N = 313 rpm, and three particle sizes ranging from 200 to 2500 μm (St = 0.24−37.3) were considered. The simulation results including the flow field and particle concentration showed good agreement with the experimental data. Turbulent flows were found in the wake region formed by the impeller sweep, and double trailing vortices behind the impeller blades were visualized. Three particle suspension states were found as quasi-homogeneous, complete, and incomplete suspensions. Impeller rotation produced strong turbulence and vortex to promote particle dispersion and particle mixing, where the dual circulated flow drove the particles to suspend in the tank. Small particles (St = 0.24) and medium particles (St = 2.6) tended to have a large drag force that caused preferential concentration around the trailing vortex, while large particles (St = 37.3) were hardly driven by the circulated flow, so their concentration gradient varied from 0 to 2 orders of magnitude.

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“…Broadly and across any research discipline, the description of research design is a prerequisite for producing persuasive representations of research from which readers of research can make sense of new knowledge (Thomson & Kamler, 2012). For instance, written research in the material sciences (see the methodology section of Zhao et al, 2020, for a useful example) tends to include specifications of the materials employed in experiments, ostensibly to allow other scholars to understand, critique, and expand on the research.…”

Section: Establishing Positionalitymentioning

confidence: 99%

Dead Reckoning: A Framework for Analyzing Positionality Statements in Ethnographic Research Reporting

Sybing

2022

Written Communication

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As essential as positionality is to qualitative research involving engagement with research participants, contemporary scholarly discussion of positionality is mainly aimed at educating emerging researchers about acknowledging their own subjectivities. In turn, there is little consensus regarding how authors should address positionality in writing for research publication. Emphasizing the importance of written positionality as a component of research transparency, this article proposes a framework for positionality in ethnographic research writing. The author collected 59 ethnographies published in peer-reviewed academic journals to study the extent to which researcher positionality is established or can be inferred through the writing of research. The analysis identifies a series of considerations for research writing such as the form of writing, sociocultural identities, relationships with research participants, and the resulting implications. The author proposes this framework as a guide for qualitative researchers who benefit from explicitly situating themselves in the research process through their writing.

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Investigation of erosion behavior of 304 stainless steel under solid–liquid jet flow impinging at 30°

Cited by 25 publications

References 46 publications

Impact of inter-particle collision on elbow erosion based on DSMC-CFD method

Impact of inter-particle collision on elbow erosion based on DSMC-CFD method

Numerical Investigation of Particle Suspensions in a Liquid–Solid Stirred Tank with Baffles

Dead Reckoning: A Framework for Analyzing Positionality Statements in Ethnographic Research Reporting

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