Packed bed structure: Evaluation of radial particle distribution
A model describing the radial distribution of monosized spheres in randomly packed beds up to distances of about two particle diameters from the vessel wall is presented here. The model is based on the existence of a highly ordered layer of particles adjacent to the wall followed by a more diffuse,...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00084034_v80_n2_p186_Mariani |
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todo:paper_00084034_v80_n2_p186_Mariani2023-10-03T14:05:57Z Packed bed structure: Evaluation of radial particle distribution Mariani, N.J. Salvat, W.I. Martínez, O.M. Barreto, G.F. Aspect ratio Bed structure Particle center distribution Voidage profile Aspect ratio Chemical reactors Diffusion Fluidized beds Particle distribution Voidage variations Chemical engineering microsphere distribution model packed bed particle dispersion article aspect ratio bed structure calculation dispersion evaluation geometry measurement model packed bed reactor particle size particulate matter prediction radial particle distribution structure analysis voidage profile A model describing the radial distribution of monosized spheres in randomly packed beds up to distances of about two particle diameters from the vessel wall is presented here. The model is based on the existence of a highly ordered layer of particles adjacent to the wall followed by a more diffuse, but still identifiable, second layer. Expressions generated from simple geometrical concepts (intersection between a cylindrical surface and a sphere) straightforwardly allow calculating the radial voidage profile given the radial distribution of particle centers and vice versa. These expressions are employed to fit the model to measures of voidage profiles within a wide range of aspect ratios, a = (RT/Rp). The model can be used to accurately predict radial voidage profiles, but it is stressed that the identification of particle distribution constitutes more valuable information than an empirical expression for describing voidage variations. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00084034_v80_n2_p186_Mariani |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Aspect ratio Bed structure Particle center distribution Voidage profile Aspect ratio Chemical reactors Diffusion Fluidized beds Particle distribution Voidage variations Chemical engineering microsphere distribution model packed bed particle dispersion article aspect ratio bed structure calculation dispersion evaluation geometry measurement model packed bed reactor particle size particulate matter prediction radial particle distribution structure analysis voidage profile |
| spellingShingle |
Aspect ratio Bed structure Particle center distribution Voidage profile Aspect ratio Chemical reactors Diffusion Fluidized beds Particle distribution Voidage variations Chemical engineering microsphere distribution model packed bed particle dispersion article aspect ratio bed structure calculation dispersion evaluation geometry measurement model packed bed reactor particle size particulate matter prediction radial particle distribution structure analysis voidage profile Mariani, N.J. Salvat, W.I. Martínez, O.M. Barreto, G.F. Packed bed structure: Evaluation of radial particle distribution |
| topic_facet |
Aspect ratio Bed structure Particle center distribution Voidage profile Aspect ratio Chemical reactors Diffusion Fluidized beds Particle distribution Voidage variations Chemical engineering microsphere distribution model packed bed particle dispersion article aspect ratio bed structure calculation dispersion evaluation geometry measurement model packed bed reactor particle size particulate matter prediction radial particle distribution structure analysis voidage profile |
| description |
A model describing the radial distribution of monosized spheres in randomly packed beds up to distances of about two particle diameters from the vessel wall is presented here. The model is based on the existence of a highly ordered layer of particles adjacent to the wall followed by a more diffuse, but still identifiable, second layer. Expressions generated from simple geometrical concepts (intersection between a cylindrical surface and a sphere) straightforwardly allow calculating the radial voidage profile given the radial distribution of particle centers and vice versa. These expressions are employed to fit the model to measures of voidage profiles within a wide range of aspect ratios, a = (RT/Rp). The model can be used to accurately predict radial voidage profiles, but it is stressed that the identification of particle distribution constitutes more valuable information than an empirical expression for describing voidage variations. |
| format |
JOUR |
| author |
Mariani, N.J. Salvat, W.I. Martínez, O.M. Barreto, G.F. |
| author_facet |
Mariani, N.J. Salvat, W.I. Martínez, O.M. Barreto, G.F. |
| author_sort |
Mariani, N.J. |
| title |
Packed bed structure: Evaluation of radial particle distribution |
| title_short |
Packed bed structure: Evaluation of radial particle distribution |
| title_full |
Packed bed structure: Evaluation of radial particle distribution |
| title_fullStr |
Packed bed structure: Evaluation of radial particle distribution |
| title_full_unstemmed |
Packed bed structure: Evaluation of radial particle distribution |
| title_sort |
packed bed structure: evaluation of radial particle distribution |
| url |
http://hdl.handle.net/20.500.12110/paper_00084034_v80_n2_p186_Mariani |
| work_keys_str_mv |
AT marianinj packedbedstructureevaluationofradialparticledistribution AT salvatwi packedbedstructureevaluationofradialparticledistribution AT martinezom packedbedstructureevaluationofradialparticledistribution AT barretogf packedbedstructureevaluationofradialparticledistribution |
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1782029925327306752 |