Effect of surface deformation on erosion prediction

How and up to what extent can the alteration in a surface caused by eroding particles affect the flow and/or erosion in subsequent time-steps? These are the questions that the current work seeks to address. For this purpose, a pseudo-transient 3D Computational Fluid Dynamics (CFD) model was adopted...

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Bibliographic Details
Published in:Wear 2019-07, Vol.430-431, p.57-66
Main Authors: Parsi, Mazdak, Jatale, Anchal, Agrawal, Madhusuden, Sharma, Partha
Format: Article
Language:English
Subjects:
Computational fluid dynamics
Computational grids
Deformation effects
Deformation mechanisms
Erosion mechanisms
Finite element method
Jet impingement
Mathematical models
Moving deforming mesh
Particle impact
Solid particle erosion
Submerged jet
Submerged jets
Surface evolution
Three dimensional models
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Summary:How and up to what extent can the alteration in a surface caused by eroding particles affect the flow and/or erosion in subsequent time-steps? These are the questions that the current work seeks to address. For this purpose, a pseudo-transient 3D Computational Fluid Dynamics (CFD) model was adopted to investigate solid particle erosion in a submerged jet impingement geometry under liquid-solid flow conditions. The change in the shape of the surface was accounted for through dynamic deformation of the solid wall surface and computational mesh based on local erosion rates at regular time intervals. In this case, as particles impacted the surface, the erosion magnitudes at different locations were calculated and the surface profile and CFD mesh were correspondingly modified and then, the flow solution was updated. It was noticed that the transformation in specimen surface altered the particle impact characteristics and thus, the erosion rates. •A Moving Deforming Mesh approach is coupled with an erosion solver to account for erosion-induced surface deformation.•Effect of surface evolution on particle impact characteristics and subsequent erosion rates is studied.•Time-dependent CFD erosion data are obtained.
ISSN:0043-1648
1873-2577
DOI:10.1016/j.wear.2019.04.019