Evaluation of Numerical Schemes for Dispersed Phase Modeling of Cyclone Separators

Shukla, Sudhish Kumar; Shukla, P. K.; Ghosh, Pradyumna

doi:10.1080/19942060.2011.11015367

Cited by 40 publications

(28 citation statements)

References 26 publications

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“…The earliest works showed that eddy viscosity turbulence models such as standard k-ε were incapable of accurate prediction of the swirling flow in cyclones [13] [14]. Others later reported an appropriate agreement with experimental data using a more complex Reynolds Stress turbulence model [15] [16]. Moreover, more demanding modeling with large eddy simulations (LES) was found to give an improved agreement with LDA measurements [17] [18] [19] [20] [21].…”

Section: Introductionmentioning

confidence: 85%

Turbulence Modelling of a Single-Phase Flow Cyclone Gasifier

Jafari¹,

Hellström²,

Gebart³

2017

ENG

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The current work aims to make a foundation for an engineering design of a cyclone gasifier to be able not only to predict its flow field with a suitable accuracy but also to investigate a large number of design alternatives with limited computer resources. A good single-phase flow model that can form the basis in an Euler-Lagrange model for multi-phase flow is also necessary for modelling the reacting flow inside a cyclone gasifier. The present paper provides an objective comparison between several popular turbulence modelling options including standard k-ε and SST with curvature corrections, SSG-RSM and LES Smagorinsky models, for the single-phase flow inside cyclone separators/gasifiers that can serve as a guide for further work on the reacting multi-phase flow inside cyclone gasifiers and similar devices. A detailed comparison between the models and experimental data for the mean velocity and fluctuating parts of the velocity profiles are presented. Furthermore, the capabilities of the turbulence models to capture the physical phenomena present in a cyclone gasifier that affects the design process are investigated.

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Section: Introductionmentioning

confidence: 85%

Turbulence Modelling of a Single-Phase Flow Cyclone Gasifier

Jafari¹,

Hellström²,

Gebart³

2017

ENG

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“…Spherical solid particles gets dispersed and diluted into gas phase, gas-solid interaction and influence of the dispersed particles volume fraction on gas phase are negligibly small. Generally particles loading in a cyclone is small (3-5%), the presence of particles does not affected by flow field where volume fraction occupied by dispersed second phase is less than 1% therefore one way coupling is adopted for simulation [5,16]. Interaction among the particles is neglected due to dilute flow.…”

Section: Model Equation For Particles Phasementioning

confidence: 99%

“…Geometry swirl number has influence on mean flow characteristics and maximum tangential velocity influences vortex size. Shukla et al [16] evaluated different numerical schemes for dispersed phase in cyclone separator.…”

Section: Introductionmentioning

confidence: 99%

Influence of inlet velocity of air and solid particle feed rate on holdup mass and heat transfer characteristics in cyclone heat exchanger

Mothilal¹,

Pitchandi

2015

J Mech Sci Technol

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“…The numerical and the experimental data were compared. Other authors have also used these experimental data as a basis of comparison were Zhao et al (2006); Shukla et al (2011a); Shukla et al (2011b), and Shukla et al (2013).…”

Section: Simulation Set-upmentioning

confidence: 99%

“…The drag force is considered to be the dominant force in the cyclone (Utakir et al, 2010 andShukla et al, 2011a and.…”

Section: Momentum and Mass Conservation Equationsmentioning

confidence: 99%

Study of Particle in Cyclones

Valverde-Ramirez¹,

Gonçalves²

2015

Anais Do XX Congresso Brasileiro De Engenharia Química

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-The turbulent gas -particle flows in cyclone was simulated considering the transfer of momentum by one-way coupling and two-way coupling. the cyclone diameter was 0.3 m. mono-dispersed particle in diluted flow was injected. the size of the particle injected in the cyclone were 1 -5 m. the inlet gas velocity was 20 m/s. the euler -lagrange modeling approach has been was used in the simulate. the turbulence model used was the reynolds stress model, which has been reported to give good results for cyclones. particle trajectories were calculated by the discrete phase model. simulations were made for both one-way (when the gas movement is not affected by the presence of the articles) and two-way coupling (when both phases influence each other). the efficiency of collection, tangential velocity and axial velocity were obtained for both coupling schemes. the results show the some behavior for the mean tangential velocity and mean axial velocity when are simulated using with one-way coupling and two-way coupling. the collection efficiency has a light variation between one-way and two way coupling. the numerical data were agreement with the experimental data.

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Evaluation of Numerical Schemes for Dispersed Phase Modeling of Cyclone Separators

Cited by 40 publications

References 26 publications

Turbulence Modelling of a Single-Phase Flow Cyclone Gasifier

Turbulence Modelling of a Single-Phase Flow Cyclone Gasifier

Influence of inlet velocity of air and solid particle feed rate on holdup mass and heat transfer characteristics in cyclone heat exchanger

Study of Particle in Cyclones

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