Large Eddy Simulation of the gas–particle flow in cyclone separators

Souza, Francisco José de; Salvo, Ricardo de Vasconcelos; Martins, Diego Alves de Moro

doi:10.1016/j.seppur.2012.04.006

Cited by 109 publications

(41 citation statements)

References 46 publications

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“…After entering the cyclone, it is quickly turned to the wall, and then the wall is turned downward to enter the ash hopper. This is consistent with the results of prior literature [7,8].…”

Section: Particle Trajectory Trackingsupporting

confidence: 94%

Effects of the Gas Outlet Duct Length on the Performance of Cyclone Separators

Qiu

2018

E3S Web Conf.

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The numerical simulation of the cyclone separator was carried out by CFD software. The effects of the gas outlet duct length on the pressure drop and separation efficiency were discussed. The gas phase is used as a continuous medium, and the RNG k-ϵ turbulence model is used to simulate the flow field. Using the particle phase as a discrete system, a random orbital model is used to calculate the orbit of the particle based on the calculated flow field. The simulation results show that the flow field in the cyclone separator is anisotropic. When the inlet velocity is constant, the pressure drop of cyclone separators increases with the increase of gas outlet duct length. The longer gas outlet duct can limit the inflowing gas, so that there is enough time to establish uniform rotating flow. It helps stabilize the spiral airflow and improve the separation performance of cyclone separator.

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“…After entering the cyclone, it is quickly turned to the wall, and then the wall is turned downward to enter the ash hopper. This is consistent with the results of prior literature [7,8].…”

Section: Particle Trajectory Trackingsupporting

confidence: 94%

Effects of the Gas Outlet Duct Length on the Performance of Cyclone Separators

Qiu

2018

E3S Web Conf.

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“…The numerical solution of the conservation equations for the momentum and turbulence is accomplished by the computational code UNSCYFL3D [16]. This in-house tool is based on the finite volume method in unstructured three-dimensional grids.…”

Section: Gas Phase Modelmentioning

confidence: 99%

“…For integrating the ordinary differential Eqs. (16), (17) and (18), the analytical scheme was used for the linear and angular velocities.…”

Section: Particle Motion Modelmentioning

confidence: 99%

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Numerical investigation of mass loading effects on elbow erosion

2015

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“…Among those models, Cyclone II was used as the benchmark model, which is the same as the standard Stairmand cyclone used in Hoekstra's experiment [1]. This model is also used to validate simulation results by other researchers [10][11][12]. Cyclones I and III have cylinder vortex finders of different diameters; Cyclones IV and V have contracted and expanded internal sections, respectively.…”

Section: Geometric Modelsmentioning

confidence: 99%

Effects of vortex finder shapes on the performance of cyclone separators

Chen

2019

Env Prog and Sustain Energy

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Researches on vortex finders of cyclone mostly focus on the diameter of the cylinder‐shaped vortex finder and the length of its internal section, while the shape of the internal section has significant effect on cyclone's performance. This article establishes, based on the Stairmand cyclone, five different cyclone models, including ones with diameter variation, and ones with internally contracted and expanded shapes. The collection efficiency and pressure drop are calculated by means of computational fluid dynamics and the relations of performances between different models are discussed. The collection efficiency improves significantly with the decrease of the vortex finder diameter; however it is accompanied with sharp increases of pressure drop. Two objectives of cyclone optimization, improving the collection efficiency and reducing the pressure drop, are seemingly contradictory. According to the result in this study, based on the standard Stairmand cyclone, the vortex finder design as contracted and expanded internal section can achieve smaller change in the collection efficiency and pressure drop. This provides a reference for vortex finder design to meet the demands of reduction of pressure drop but not decrease collection efficiency largely or vice versa. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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Large Eddy Simulation of the gas–particle flow in cyclone separators

Cited by 109 publications

References 46 publications

Effects of the Gas Outlet Duct Length on the Performance of Cyclone Separators

Effects of the Gas Outlet Duct Length on the Performance of Cyclone Separators

Numerical investigation of mass loading effects on elbow erosion

Effects of vortex finder shapes on the performance of cyclone separators

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