Título: | AN ALGORITHM FOR THE GENERATION OF PARTICLE ARRANGEMENTS FOR APPLICATION WITH THE DISCRETE ELEMENT METHOD | ||||||||||||||||||||||||||||||||||||
Autor: |
ANDRE LUIZ FERREIRA PINTO |
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Colaborador(es): |
DEANE DE MESQUITA ROEHL - Orientador |
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Catalogação: | 19/MAR/2010 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||||||||||||||||||||||||||
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/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=15402&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=15402&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.15402 | ||||||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||||||
The Discrete Element Method (DEM), developed in the 70’s, has
become more a attractive with the increasing computer processing capacity
and the development of high-performance computational techniques. This
scenario induced growing interest of many researchers as a tool to study
engineering problems. A very appealling field of study is the modeling of
phenomena associated with granular materials, including the compaction
of granular packages, such as metal powders in the steel industry, sand
production and proppant flowback in the petroleum industry, which is
motivation to this work. The application of the method in its first step
requires the generation of the particles’ initial configuration or the filling
of domains with them. Some studies have focused on the development of
algorithms to generate dense packing of particles. This work presents an
algorithm to generate random dense packing of particles that correspond
to a given granulometric curve and are consistent with other parameters
set for the granular package. In the present work special attention is
given to generation of two-dimensional packings of disks to model the
phenomenon of fractures filling in wells stimulated by hydraulic fracturing.
The proppant flowbak generated by the oil pumping is a leading cause
of production decline in fractured wells, besides causing damage to the
production equipment. The proposed algorithm was implemented in Java
language and the optimization of packings was performed according to the
porosity using genetic algorithms. Applications of the algorithm to some
packings of particles and the problem of filling of fractures are presented.
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