Título: | VISCOPLASTIC LIQUIDS DISPLACEMENT IN POROUS MEDIA | ||||||||||||
Autor(es): |
JANE CELNIK |
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Colaborador(es): |
PAULO ROBERTO DE SOUZA MENDES - Orientador |
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Catalogação: | 08/AGO/2005 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | SENIOR PROJECT | ||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/TFCs/consultas/conteudo.php?strSecao=resultado&nrSeq=6763@1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/TFCs/consultas/conteudo.php?strSecao=resultado&nrSeq=6763@2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.6763 | ||||||||||||
Resumo: | |||||||||||||
In this work, we studied the internal flow of viscoplastic
liquids through an
expansion followed by a contraction, both abrupt and
axissymetric, in tubes of circular
cross section. Flows like this can be found in many
industrial processes such as
drawing, displacement of liquids in porous media (as for
example, displacement of oil in
porous rocks, called reservoirs), among others.
We carried through tests for a wide range of the ratio
between the lenght and
diameter of the tube, and the ratio between the largest and
smaller diameter as well as
for different flow rates. We observed yielded and non-
yielded regions of the fluid for
different combinations of these parameters.
The yield stress strongly affects the flow pattern through
the tube. For low
values of the length-to-diameter ratio, the viscoplastic
liquid has a border dividing it in
two regions: in the external part of the border, a region
in which the fluid is not yielded
and in the internal part of the border, a region where the
yield stress is exceeded and
thus, the fluid flows. The phenomenon is known by
fracturing.
The behavior of the viscoplastic fluid is studied with the
aid of the model of
Souza Mendes and Dutra (2004).
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