The Traceless Oldroyd viscoelastic model
12/05/2016 Thursday 12th May 2016, 15:00 (Room P3.10, Mathematics Building)
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Marília Pires, Departamento de Matemática, CIMA, Universidade de Évora
In the traceless Oldroyd viscoelastic model, the viscoelastic extra stress tensor is decomposed into its traceless (deviatoric) and spherical parts, leading to a reformulation of the classical Oldroyd model. The equivalence of the two models is established comparing model predictions for simple test cases. The new model is validated using several 2D benchmark problems. The structure and behaviour of the new model are discussed and the future use of the new model in envisioned, both on the theoretical and numerical perspectives. Work in collaboration with T. Bodnár. References: Bodnár, T., Pires, M. and Janela, J. (2014). Blood Flow Simulation Using Traceless Variant of JohnsonSegalman Viscoelastic Model. Mathematical Modelling of Natural Phenomena 9,(6), 117141.
