Pressure and flow in slender silos (h/d≥1,5) / Pressões e fluxo em silos esbeltos (h/d≥1,5)

AUTOR(ES)

Giovano Palma

DATA DE PUBLICAÇÃO

2005

RESUMO

Silos are structures that usually present process and failures problems due to insufficient knowledge of bulk solids pressures and flow. An analysis of the principal international theories and standards shows divergences, mainly in the pressures determination due to the storage of bulk solids. This work presents a theoretical study of the pressures and flow in slender vertical silos (h/d≥1,5) due the storage of the bulk solids. An state of the art of the theories of pressures and flow proposed by the most important researchers and international standards on the subject is presented. As a practical example, the pressures were determined in a slender vertical silo with conical bottom, for mass and funnel flow patterns and for two granular materials. Based on the study, a proposal of Brazilian standard was elaborated for the determination of the pressures due the bulk solids for slender silos, considering that Brazil doesn t still have a specific standard for the design and construction of silos. A software for pressures determination was also developed.

ASSUNTO(S)

estruturas de armazenamento pressures pressões silos esbeltos storage structures slender silos flow fluxo

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