Data/hora: 25/06/2024 19:19:49

Biblioteca(s): | Embrapa Instrumentação.
Data corrente: | 22/12/1999
Data da última atualização: | 22/12/1999
Autoria: | ONODY, R. N.; POSADAS, D. A.; CRESTANA, S.
Afiliação: | USP-IFSC; Universidade Estadual de Ponta Grossa; EMBRAPA-CNPDIA.
Título: | Experimental studies of the fingering phenomena in two dimensions and simulation using a modified invasion percolation model.
Ano de publicação: | 1995
Fonte/Imprenta: | In: ENCONTRO NACIONAL DE FISICA DA MATERIA CONDENSADA, 18., jun. 1995, Caxambu, MG. Resumos... Sao Paulo: Sociedade Brasileira de Fisica, 1995.
Páginas: | p.102.
Idioma: | Inglês
Conteúdo: | Experiments of water infiltration in a vertical plane through layered soils were carried out in the laboratory. We have followed the fingering dynamics by using image techniques. The fractal theory has been applied to describe the fingering phenomena. We also have simulated a modified site gradient invasion percolation model where most of the physical ingredients relevant to the problem have been incorporated. Differently of to what happens with the standard gradient invasion percolation model, we have found the formation of many fingers. Taking into account the bond number, the number of fingers and the wetted area of the experiments, we have fitted the parameters of our model. This opens the possibility of a theoretical predictions of the pore size distribution of the soil. The results are then compared with the experimental data.
Palavras-Chave: | Bidimensional; Fingering phenomena; Model; Modelo; Percolacao; Percolation; Simulation; Two dimensional.
Thesagro: | Simulação; Solo.
Thesaurus Nal: | soil.
Categoria do assunto: | --
Registro original: | Embrapa Instrumentação (CNPDIA)
Exemplares: | CNPDIA - (5461-1) - UPC - PL - -- - PROCI-95.00090 -  - 1995.00090 - DIS