A FEM-DEM technique for studying the motion of particles in non-Newtonian fluids. Application to the transport of drill cuttings in wellbores

Celigueta, Miguel Ángel; Deshpande, Kedar; Latorre, Salvador; Oñate, Eugenio

doi:10.1007/s40571-015-0090-3

Cited by 19 publications

(16 citation statements)

References 33 publications

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“…In contrast to previous PFEM-DEM formulations [39,40], where the PFEM mesh nodes were assumed to be coincident with the suspended spherical elements, in this work the solid particles are free to move across the uid elements of the PFEM mesh, such as in the traditional particle-in-cell scheme [57,56]. This is extremely helpful in order to maintain a good quality of the mesh during the analysis at a reasonable cost, the reason being that the solid particles do not impose any restriction to the PFEM remeshing procedure.…”

Section: Introductionmentioning

confidence: 92%

PFEM–DEM for particle-laden flows with free surface

et al. 2019

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This work proposes a fully Lagrangian formulation for the numerical modeling of free-surface particle-laden ows. The uid phase is solved using the Particle Finite Element Method (PFEM), while the solid particles embedded in the uid are modeled with the Discrete Element Method (DEM). The coupling between the implicit PFEM and the explicit DEM is performed through a sub-stepping staggered scheme. This work only considers suspended spherical particles that are assumed not to aect the uid motion. Several tests are presented to validate the formulation. The PFEM-DEM results show very good agreement with analytical solutions, laboratory tests and numerical results from alternative numerical methods.

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Section: Introductionmentioning

confidence: 92%

PFEM–DEM for particle-laden flows with free surface

et al. 2019

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“…For realistic cuttings feed rates this term is small and can be safely ignored. Note that an approximation has been made in (12), because the total pressure p0 is computed with dynamic pressure of the mud…”

Section: Conservation Statements For Two-phase Flowmentioning

confidence: 99%

“…In order to compute the cuttings slip velocity from relation (11) a correlation for the particle drag force is needed. Following the results of [12] a linear dependency was assumed…”

Section: Cuttings Drag Forcementioning

confidence: 99%

An implicit unsteady hydraulic solver for suspended cuttings transport in managed pressure wells

et al. 2018

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We present a simulation tool for transient events in complex hydraulic networks. The code includes modelling of the transport of suspended cuttings in near-vertical wells. An unstructured finite volume formulation with implicit time integration has been chosen. The unconditional stability of the integrator makes the method suitable for the simulation of transient events over a wide range of characteristic time scales. It handles both very fast transients (e.g. fluid hammer events) as well as the long-term evolution of the well (e.g. hole cleaning operations). The software has been developed to address the need of the oil industry for a robust and efficient predictive tool allowing effective well control in managed pressure drilling operations. The physical modelling follows the standard practices accepted by the industry (e.g. mud rheology computations). The mathematical foundation of the algorithm is described followed by validation cases that illustrate its capabilities and accuracy. Finally, a practical industrial application example is provided to demonstrate the real-world performance of the software.

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“…Often either a fully or coupled Discrete Element Method (DEM) is used. Thus contributions exhibit Lattice-Bolzmann-DEM approaches [8], SPH-DEM approaches [9,10], Finite-Element-DEM approaches [11,12] or Particle-Finite-Element-Method approaches (PFEM) [13] to name only a few. All of these methods have in common, that they are either Eulerian grid-based methods (FEM, LB) which are limited when large deformations are invloved or free surface flow is dominant or else are not able to discretize the surrounding fluid without a coupling algorithm (DEM).…”

Section: Introductionmentioning

confidence: 99%

Modelling of Non-Spherical Particles in Dilute Non-Colloidal Suspensions Using SPH

Kijanski¹,

Krach²,

Steeb³

2020

Preprint

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Suspensions and their applications can be found in many engineering, environmental or medical fields. Considering the special field of dilute suspensions, possible applications are cement paste or procedural processes in the production of medication or food. While the homogenized behavior of these applications is well understood, contributions in the field of pore-scale fully resolved numerical simulations with non-spherical particles are rare. Using Smoothed Particle Hydrodynamics as a simulation framework we therefore present a model for Direct Numerical Simulations of single-phase fluid containing non-spherically formed solid aggregates. Notable and discussed model specifications are the surface-coupled fluid-solid interaction forces as well as the contact forces between solid aggregates. Moreover we simulate and analyze the behavior of dilute non-colloidal suspensions of non-spherical solid particles in Newtonian fluids. The focus of this contribution is the numerical model for suspensions and its implementation in SPH. Therefore shown numerical examples present application examples for a first numerical analysis of influence factors in suspension flow. Results show that direct numerical simulations reproduce known phenomena like shear induced migration very well. Moreover the present investigation exemplifies the influence of concentration and form of particles on the flow processes in greater detail.

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A FEM-DEM technique for studying the motion of particles in non-Newtonian fluids. Application to the transport of drill cuttings in wellbores

Cited by 19 publications

References 33 publications

PFEM–DEM for particle-laden flows with free surface

PFEM–DEM for particle-laden flows with free surface

An implicit unsteady hydraulic solver for suspended cuttings transport in managed pressure wells

Modelling of Non-Spherical Particles in Dilute Non-Colloidal Suspensions Using SPH

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