Simulating coarse particle conveying by a set of Eulerian, Lagrangian and hybrid particle models

Pirker, Stefan; Kahrimanovic, Damir; Kloss, Christoph; Popoff, B.; Braun, Meire Pereira de Souza

doi:10.1016/j.powtec.2010.07.033

Cited by 39 publications

(20 citation statements)

References 16 publications

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“…Pirker et al [2]). This must be done because the standard Eulerian granular model lacks some important physics.…”

Section: Additional Forces For Eulerian Granular Phase and Lagrangianmentioning

confidence: 99%

“…The fluid-torque can be written as (e.g. Pirker et al [2]) Collisional forces between particles in a strand effects that the rotation of the particles decreases. The rotational energy is transformed via friction into temperature, also granular temperature which is neglected in this paper, because of the very small values.…”

Section: Magnus Force and Torquementioning

confidence: 99%

“…Pirker et al [2]). There are other hybrid models too, for example the Dense Discrete Phase Model (DDPM), described in e.g.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Studies of different numerical models for a turbulent particulate flow in a square pipe with 90° bend

Schellander¹,

Kahrimanovic²,

Pirker³

2011

Computational Methods in Multiphase Flow VI

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In process industry simulating particulate flow is one of the actual top level research topics. Driven by the wish for readily available simulation results with predictive description of the processes in fluid and granular flow, many mathematical models have been proposed. Among these models Eulerian and Lagrangian based particle models are most common. These models have been additionally augmented by sub-models in order to picture effects like particle rotation, rough wall treatment or interparticle collisions. The last one includes in Lagrangian phase a very high increase of computational effort because of finding collision partners.In this paper these models are tested at a very simple flow situation of a 90° bended square duct flow. From classical kinetic theory, Eulerian particle model is considered and also a discrete phase model, known as Lagrangian particle model. Finally, a hybrid Eulerian-Lagrangian model, EUgran+, is introduced using a new radial distribution coefficient, based on measurements of Gidaspow and Huilin. The presented hybrid model is based on an Eulerian model that is augmented by Lagrangian tracer particles. These tracer particles provide additional information on e.g. particle rotation and particle wall treatment that prepares information for the classical Eulerian phase, using coupling equations.It was the aim to create a robust simulation model for simulating particulate flows with high and low loaded particle regions. The second aim was to create a model which gives comparable accuracy as a Lagrangian model with particle collision, without calculating collisions in Lagrangian phase, to decrease the computational time.

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“…Pirker et al [2]). This must be done because the standard Eulerian granular model lacks some important physics.…”

Section: Additional Forces For Eulerian Granular Phase and Lagrangianmentioning

confidence: 99%

Section: Magnus Force and Torquementioning

confidence: 99%

See 1 more Smart Citation

Studies of different numerical models for a turbulent particulate flow in a square pipe with 90° bend

Schellander¹,

Kahrimanovic²,

Pirker³

2011

Computational Methods in Multiphase Flow VI

Self Cite

View full text Add to dashboard Cite

show abstract

“…Despite the existence of advanced modeling for turbulent gas-solid flows (Huilin et al, 2003) and modern powerful numerical methods to solve this complex flow model (Chu and Yu, 2008;Pirker et al, 2010), the empirical correlation for both pickup and saltation velocities still remains as a practical issue for industrial pneumatic conveying systems design Several attempts have been made in the past to predict the minimum conveying velocity, but, unfortunately, the majority of existing approaches have several limitations and contradictions, as reviewed by Yi et al (1998) and Rabinovich and Kalman (2008).…”

Section: Introductionmentioning

confidence: 99%

On the prediction of pickup and saltation velocities in pneumatic conveying

Gomes

Mesquita²

2014

Braz. J. Chem. Eng.

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-This paper presents a comparative study of the critical pickup and saltation velocities of particles in horizontal pipelines for pneumatic conveying design. A comparative study is performed using different existing correlations in the literature for the determination of the minimum velocity of transport as a function of the particle and pipe diameter, particle density, solid mass flow rate and particle sphericity. Their limitations and difficulties in predicting those critical velocities are analyzed. For the pickup velocity, an experimental study was also carried out in order to support the analysis. Recommendations are presented on the use of such correlations.

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“…The latter study, in particular, focuses on the effect of wall roughness on the particle concentration distribution across the channel and the velocity characteristics of both phases by accounting for full coupling between the phases. Pirker et al (2010) also used a discrete element method coupled with fluid flow calculations and the Eulerian granular model to study horizontal conveying through a duct with a square cross-section. The emphasis in this work was related to the break-up of particle 'ropes' that consisted of very coarse particles (1 mm glass beads in this case) produced by a spiral inlet to the duct.…”

Section: Introductionmentioning

confidence: 99%

Particle-Interaction Effects in Turbulent Channel Flow

Afkhami

Hassanpour

Fairweather

et al. 2013

Computer Aided Chemical Engineering

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Large eddy simulation and a discrete element method are applied to study the flow, particle dispersion and agglomeration in a horizontal channel. The particle-particle interaction model is based on the Hertz-Mindlin approach with Johnson-KendallRoberts cohesion to allow the simulation of Van der Waals forces in a dry air flow. The influence of different particle surface energies on agglomeration, and the impact of fluid turbulence, are investigated. The agglomeration rate is found to be strongly influenced by the particle surface energy, with most of the particle-particle interactions taking place at locations close to the channel walls, aided by the higher concentration of particles in these regions.

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Simulating coarse particle conveying by a set of Eulerian, Lagrangian and hybrid particle models

Cited by 39 publications

References 16 publications

Studies of different numerical models for a turbulent particulate flow in a square pipe with 90° bend

Studies of different numerical models for a turbulent particulate flow in a square pipe with 90° bend

On the prediction of pickup and saltation velocities in pneumatic conveying

Particle-Interaction Effects in Turbulent Channel Flow

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