Prediction of ceramic foams permeability using Ergun's equation



Título del documento: Prediction of ceramic foams permeability using Ergun's equation
Revista: Materials research
Base de datos: PERIÓDICA
Número de sistema: 000312409
ISSN: 1516-1439
Autores: 1


Instituciones: 1Universidade Federal de Sao Carlos, Departamento de Engenharia de Materiais, Sao Carlos, Sao Paulo. Brasil
Año:
Periodo: Oct
Volumen: 2
Número: 4
Paginación: 283-289
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental
Resumen en inglés SiC-Al2O3 ceramic foams with 30 to 75 pores per linear inch (ppi) were used to access the application of pore size obtained by image analysis to estimate the cellular materials permeability through Ergun's equation. Samples were sliced and the pore size distribution, cross-sectional porosity and pore density were evaluated as a function of the slice thickness based on optical and X-ray computerized tomography acquired images. The average pore sizes were used to calculate permeability constants (k1 and k2) of Ergun's equation, which were compared to those experimentally obtained under water flow. Results indicated that the optical diameter distribution was very sensitive to the number of pore layers. Deviation between experimental and calculated values depended on the slice thickness. Nevertheless, the introduction of pore size obtained by image analysis into Ergun's equations seems to give fair results to assess the permeability of ceramic foams
Disciplinas: Ingeniería
Palabras clave: Ingeniería de materiales,
Permeabilidad,
Espumas,
Cerámica
Keyword: Engineering,
Materials engineering,
Permeability,
Foams,
Ceramics
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