Título: | NUMERICAL STUDY OF SWIRLING ROUND JET IMPINGING ON A HEATED PLATE | ||||||||||||||||||||||||||||||||||||||||
Autor: |
DAVID IVAN MALDONADO TAVARA |
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Colaborador(es): |
ANGELA OURIVIO NIECKELE - Orientador |
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Catalogação: | 19/AGO/2011 | 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=18103&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=18103&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.18103 | ||||||||||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||||||||||
Incident swirling jets are complex flow, which involve a large variety of
regimes. The numerical prediction of this type of flow can help understand
the several phenomena present, which could allow development of more
efficient processes, as well as assist in the evaluation of turbulence
models.
Aiming to evaluate the performance of different turbulence models in
the predict of an axi-symmetric swirling jet impinging to a hot plate, the flow
field was determined with the computational tool FLUENT, by employing
two methodologies. The first one is based on the Reynolds average
(RANS) and the second one is based on the Large Eddy Simulation (LES).
Several two differential equations RANS models were tested, in order
to identify their range of validity, by comparing with available experimental
data. The methodology LES was evaluated with the dynamic Smagorinsky
sub-grid model.
In spite of the high cost, due to the need of utilizing a large memory
space and simulation time, the results obtained with the LES methodology
were significantly superior, due to the high anisotropy of the flow, which the
RANS models have difficult to predict.
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