Data/hora: 13/06/2024 05:22:13

Biblioteca(s): 	Embrapa Instrumentação.	
Data corrente: 	03/07/2003	
Data da última atualização: 	24/08/2010	
Autoria: 	WILDENSCHILD, D.; HOPMANS, J. W.; VAZ, C. M. P.; RIVERS, M. L.; RIKARD, D.; CHRISTENSEN, B. S. B.	
Afiliação: 	Embrapa Instrumentação Agropecuária, São Carlos, SP.	
Título: 	Using X-ray computed tomography in hydrology: systems, resolutions, and limitations.	
Ano de publicação: 	2002	
Fonte/Imprenta: 	Journal of Hydrology, Amsterdam, v. 267, p. 285-297, 2002.	
Idioma: 	Português	
Conteúdo: 	A combination of advances in experimental techniques and mathematical analysis has made it possible to characterize phase distribuion and pore geometry in porous media using non-destructive Z-ray computed tomography (CT). We present qualitative and quantitative CT results for partially saturated media, obtained with different scanning systems and sample sizes, to illustrate advantages and limitations of these various systems, including topics of spatial resolution and contrast. In addition, we present examples of our most recent three-dimmensional high-resolution images, for which it was possible to resolve individual pores and to delineate air-water interfacial contacts. This kind of resolution provides a novel opportunity to follow the dynamic flow behavior on the pore scale and to verify new theoretical and numerical modeling approaches.	
Palavras-Chave: 	Multi-phase flow; Pore structure; Synchrotron radiation; Tomografia por raios-X; Visualization; X-ray tomography.	
Thesaurus Nal: 	porous media.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Instrumentação (CNPDIA)	
Exemplares: 	CNPDIA - (7674-1) - UPC - SP - -- - PROCI-02.00076 -  - 2002.00076 - DIS