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- W2556887614 abstract "Industrial processes include complex fluids often u sed for specific needs such as dip-coating and removal of objects embedded in those fluids. Theref ore, a better understanding of their behaviour may help to better respond to the needs. In this co ntext, this numerical analysis focuses on the creeping flow of a yield stress fluid (carbopol gel ) around a blade. In order to deal with large deformation processes o f complex materials in the continuum mechanics framework, the Finite Element Method with Lagrangian Integration Points is used [1]. This method originates from the Particle-In-Cell method for whi ch the numerical integration weight is recomputed in each configuration in order to keep the finite e lement properties of the Gaussian integration scheme. Indeed, the Lagrangian particles owing all constitutive and history variables are used in a given configuration as integration points in order to compute the nodal velocity field. At the end of a step, the particle positions are updated based on t he velocity field and by means of FE shape functions. This method has already been applied to geophysics [2], fresh concrete flow [3] and landslides [4]. Based on the unified constitutive law recently deve loped in [5], a 3D Herschel-Bulkley model has been implemented in numerical tool based on the FEMLIP. The yield stress is detected by means of the second invariant of the Cauchy stress tensor an d the material behaves elastically below the yield stress. The originality of the study relies on the understa nding of the flow properties especially below the yield stress. The numerical results in terms of vel ocity field and analysis of the unyielded zone are then compared to the experimental results based on PIV measures." @default.
- W2556887614 created "2016-11-30" @default.
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- W2556887614 date "2015-01-01" @default.
- W2556887614 modified "2023-09-27" @default.
- W2556887614 title "Flow of an elasto-viscoplastic fluid around a blade by means of the FEM with Lagrangian Integration Points (FEMLIP)" @default.
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