Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/65982
Título: | Improving the numerical stability of steady-state differential viscoelastic flow solvers in OpenFOAM (R) |
Autor(es): | Fernandes, C. Araujo, Manoel S. B. Ferrás, Luís Jorge Lima Nóbrega, J. M. |
Data: | 2019 |
Editora: | Springer International Publishing AG |
Resumo(s): | This work reports the developments made in improving the numerical stability of the viscoelastic solvers available in the open-source finite volume computational library OpenFOAM (R). For this purpose, we modify the usual both-side diffusion (BSD) technique, using a new approach to discretize the explicit diffusion operator. Calculations performed with the new solver, for two benchmark 2D case studies of an upper-convected Maxwell (UCM) fluid, are presented and compared with literature results, namely the 4:1 planar contraction flow and the flow around a confined cylinder. In the 4:1 planar contraction flow, the corner vortex size predictions agree well with the literature, and a relative error below 5.3% is obtained for De <= 5. In the flow around a confined cylinder, the predictions of the drag coefficient on the cylinder are similar to reference data, with a relative error below 0.16% for De <= 0.9. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/65982 |
ISBN: | 9783319608457 |
DOI: | 10.1007/978-3-319-60846-4_20 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | IPC - Textos completos em actas de encontros científicos internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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2018_BookChapter_OFW11_UCM_Celio.pdf Acesso restrito! | 504,72 kB | Adobe PDF | Ver/Abrir |