Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/79876
Título: | A fully implicit log-conformation tensor coupled algorithm for the solution of incompressible non-isothermal viscoelastic flows |
Autor(es): | Fernandes, C. |
Palavras-chave: | fully implicit coupled solver viscoelastic flow log-conformation tensor approach non-isothermal effects finite volume method OpenFOAM |
Data: | 30-Set-2022 |
Editora: | MDPI |
Revista: | Polymers |
Citação: | Fernandes, C. A Fully Implicit Log-Conformation Tensor Coupled Algorithm for the Solution of Incompressible Non-Isothermal Viscoelastic Flows. Polymers 2022, 14, 4099. https://doi.org/10.3390/polym14194099 |
Resumo(s): | In this work, a block-coupled algorithm is presented, which can compute laminar, incompressible, non-isothermal, viscoelastic flow problems based on the log-conformation tensor approach. The inter-equation coupling of the incompressible Cauchy linear momentum and mass conservation equations is obtained in a procedure based on the Rhie–Chow interpolation. The divergence of the log-conformation tensor term in the linear momentum equations is implicitly discretized in this work. In addition, the velocity field is considered implicitly in the log-conformation tensor constitutive equations by expanding the advection, rotation and the rate of deformation terms with a Taylor series expansion truncated at the second-order error term. Finally, the advection and diffusion terms in the energy equation are also implicitly discretized. The mass, linear momentum, log-conformation tensor constitutive model and energy-discretized linear equations are joined into a block-matrix following a monolithic framework. Validation of the newly developed algorithm is performed for the non-isothermal viscoelastic matrix-based Oldroyd-B fluid flow in the axisymmetric 4:1 planar sudden contraction benchmark problem. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/79876 |
DOI: | 10.3390/polym14194099 |
e-ISSN: | 2073-4360 |
Versão da editora: | https://www.mdpi.com/2073-4360/14/19/4099 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
polymers-14-04099.pdf | 1,97 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons