Use este identificador para citar ou linkar para este item: http://carpedien.ien.gov.br:8080/handle/ien/2521
Tipo: conferenceObject
Título: The analytical benchmark solution of a spatial diffusion kinetics in source driven systems for homogeneous media
Autor(es): Oliveira, Fernando Luiz de
Maiorino, José Rubens
Santos, Rubens Souza dos
Resumo: This paper describes a closed form solution obtained by the expansion method for the general time dependent diffusion model with delayed emission for source transients in homogeneous media. In particular, starting from simple models, and increasing the complexity, numerical results were obtained for different types of source transients. Thus, first an analytical solution of the one group without precursors was solved, followed by considering one precursors family. The general case of G-groups with R families of precursor although having a closed form solution, cannot be solved analytically, since there are no explicit formulae for the eigenvalues, and numerical methods must be used to solve such problem. To illustrate the general solution, the multi-group (three groups) time-dependent without precursors was also solved and the results inter compared with results obtained by the previous one group models for a given fast homogeneous media, and different types of source transients. The results are being compared with the obtained by numerical methods.
Palavras-chave: INAC 2007
Analytical solution
Numerical methods
Driven systems
Idioma: eng
País: Brasil
Editor: Instituto de Engenharia Nuclear
Sigla da Instituição: IEN
Tipo de Acesso: openAccess
URI: http://carpedien.ien.gov.br:8080/handle/ien/2521
Data do documento: Set-2007
Aparece nas coleções:Engenharia e Segurança de Reatores Nucleares - Trabalhos de Congresso

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