Numerical simulation and experimental verification of gas flow through packed beds

Natarajan, Shankar; Zhang, C.; Briens, Cédric

doi:10.1016/j.powtec.2005.01.006

Cited by 11 publications

(7 citation statements)

References 11 publications

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“…However, the overall agreement between the numerical and the experimental data is still satisfying. The minor discrepancy may be attributed to the assumptions used in the numerical simulations, which include constant porosity of the packed bed, uniform size of catalyst particles and smooth solid particles [10]. In reality, the porosity is higher near the fin and lower towards the centre of the passage and the particles sizes are not uniform.…”

Section: Resultsmentioning

confidence: 99%

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Distribution optimization for plate-fin catalytic combustion heat exchanger

Wang

2007

Chemical Engineering Journal

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Section: Resultsmentioning

confidence: 99%

“…Because of no significant difference between the results using various difference discretization schemes [10] in porous media model, the governing equations, Eqs. (1)-(3), are discretized using the default scheme and solved by an iterative method.…”

Section: Numerical Simulationsmentioning

confidence: 99%

Distribution optimization for plate-fin catalytic combustion heat exchanger

Wang

2007

Chemical Engineering Journal

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“…The molecular diffusivity is calculated using the binary diffusivity equation, as a function of temperature, pressure, and the properties of the vapor and air Because of the small dimension of the pore size in the porous material used in this study, Knudsen diffusion must be taken into consideration.…”

Section: Numerical Modelmentioning

confidence: 99%

“… Because of the small dimension of the pore size in the porous material used in this study, Knudsen diffusion must be taken into consideration. The Knudsen diffusivity is given by , where d p is the diameter of the pores, R the gas constant, and M the molecular weight of the vapor.…”

Section: Numerical Modelmentioning

confidence: 99%

Experimental and Numerical Studies of Water Droplet Impact on a Porous Surface in the Film-Boiling Regime

Wang

Fan

2008

Ind. Eng. Chem. Res.

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An experimental and numerical study of the water droplet in collision with a porous surface in the film-boiling regime is reported. The porous substrate with a porosity of 34% and pore size of 76 nm is heated to 300 °C, and the motion of the droplet is recorded by a high-speed digital camera. A new three-dimensional (3-D) numerical model is developed to account for the transport phenomenon both inside and outside the porous media, by coupling the flow field with the heat and mass transfer process. The vapor layer model is used as a subgrid model to calculate the induced vapor pressure in the narrow region between the droplet and the surface. The vapor mass transfer is modeled considering the vapor generation and transport mechanisms in different domains. Direct numerical simulation is performed under the same conditions as the experiment, and the simulation results for the droplet behavior are in good agreement with the experimental results. The collision of a water droplet on the porous surface shows similar features to those on nonporous surfaces in the film-boiling regime, probably because of the small pore size of the material used in the current study. However, the droplet has a longer residence time, and it also seems to be less stable on the porous surface.

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“…1 [18][19][20][21][22][23][24]. Based on the literature review, it is obvious that CFD has the capability to model the hydrodynamics, heat transfer, and reaction processes in packed-bed columns and reactors, as summarized in Tab.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Adsorption of CO₂ from Methane: Studies on Mass and Heat Transfer

et al. 2013

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Three-dimensional computational fluid dynamics studies related to dynamics adsorption of CO 2 from natural gas is found to be limited. 3D analyses for dynamics adsorption are substantially crucial to give a better prediction on the adsorption process by considering the actual fluid flow behavior within the packed-bed porous media. A kinetic adsorption model has been integrated in a commercial fluid dynamics simulator to simulate the 3D hydrodynamics and adsorption phenomenon in a zeolite-filled packed column for a CO 2 -methane separation system. The effects of various parameters such as Reynolds number, CO 2 feed concentration, feed temperature, and column dimension on CO 2 adsorption efficiency have been investigated. A correlation for adsorption efficiency based on the CO 2 concentration profiles has been developed and validated. Figure 5. CO 2 concentration factor (C) contours along the bed at different times and feed concentratios; v = 0.35 m s -1 , e = 0.4, l = 8 m, T w = 300 K, T f = 300 K. 282 K. K. Lau et al.

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Numerical simulation and experimental verification of gas flow through packed beds

Cited by 11 publications

References 11 publications

Distribution optimization for plate-fin catalytic combustion heat exchanger

Distribution optimization for plate-fin catalytic combustion heat exchanger

Experimental and Numerical Studies of Water Droplet Impact on a Porous Surface in the Film-Boiling Regime

Dynamic Adsorption of CO₂ from Methane: Studies on Mass and Heat Transfer

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Numerical simulation and experimental verification of gas flow through packed beds

Cited by 11 publications

References 11 publications

Distribution optimization for plate-fin catalytic combustion heat exchanger

Distribution optimization for plate-fin catalytic combustion heat exchanger

Experimental and Numerical Studies of Water Droplet Impact on a Porous Surface in the Film-Boiling Regime

Dynamic Adsorption of CO2 from Methane: Studies on Mass and Heat Transfer

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Product

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Dynamic Adsorption of CO₂ from Methane: Studies on Mass and Heat Transfer