Influence of the gas temperature on the separation efficiency of aerocyclones

Bohnet, Matthias

doi:10.1016/0255-2701(94)04001-x

Cited by 48 publications

(37 citation statements)

References 4 publications

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“…The predictions on cyclone performance were compared with the result from Bohnet (1995). The CFD predictions on cyclone performance are in good agreement with Bohnet's data within the operating domain investigated in this study (figures 4 to 6).…”

Section: Resultssupporting

confidence: 75%

“…Evidence of the particle collection through deposition on the cyclone wall has been reported previously by Yoshida et al (2001). The experimental data of Bohnet (1995) have been successfully reproduced numerically via CFD modelling. The pressure drop and collection efficiency of the cyclone were successfully predicted numerically, implying that the cyclone flow field was also simulated correctly.…”

Section: Resultssupporting

confidence: 62%

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CFD Simulation of Aerocyclone Hydrodynamics and Performance at Extreme Temperature

Gimbun¹

2008

Engineering Applications of Computational Fluid Mechanics

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This work presents a Computational Fluid Dynamics calculation to predict and to evaluate the hydrodynamics and performance of a cyclone operating at extreme temperature. The numerical solutions were carried out using commercial CFD code FLUENT 6.1. The simulation was realised using a Reynolds stress model (RSM) for turbulent modelling and discrete phase model (DPM) for particle trajectories calculation. The kinetic theory was employed to predict the physical gas properties, i.e., ρ, C p and μ as they vary with the operating temperature. The CFD simulations predict excellently the cyclone performance and gas properties at extreme operating conditions with a deviation of about 5% from the experimental data. The physical mechanism for cyclones operating under high temperature has been also successfully elucidated. Results obtained from the computer modelling exercise have demonstrated that CFD is a reliable method of modelling the cyclone performance at extreme temperature. Therefore, similar method can be applied to examine the effects of operating temperature on the cyclone performance. This method of analysis is almost certainly less expensive than experiment, and represents a cost-effective route for design optimisation.

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Section: Resultssupporting

confidence: 75%

Section: Resultssupporting

confidence: 62%

CFD Simulation of Aerocyclone Hydrodynamics and Performance at Extreme Temperature

Gimbun¹

2008

Engineering Applications of Computational Fluid Mechanics

View full text Add to dashboard Cite

show abstract

“…Table 2 also shows the flow rates and the results predicted with four different models, namely Barth, Lapple, Casal, TABLE 1 The geometry used to test the model and Alexander. The details of these models can be found, for instance, in Shepherd and Lapple (1939), Casal and Martinez (1983), Bohnet (1995), Gil et al (2002), and Altmeyer et al (2004). As can be seen from the table that the model presented in this study predicts the experimental results quite well comparing to the other models.…”

Section: Resultssupporting

confidence: 65%

“…Although, the present model takes into account the outlet pipe diameter implicitly, the agreement between calculated pressure drops and experimental values is very good especially for D 2 /D 1 = 0.152. Figure 6 shows the calculated pressure drop obtained using the models and the experimental values measured by Bohnet (1995). The pressure drop decreases significantly with rising temperature, mainly due to the decrease of the density and increase of the viscosity of the gas.…”

Section: Resultsmentioning

confidence: 99%