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|NUMERICAL TESTS OF VANISHING DIFFUSION STABILIZATION IN OLDROYD-B FLUID FLOW SIMULATIONS
|Finite Element Method
|In Proceedings Topical Problems of Fluid Mechanics 2021
|This work presents some numerical tests of finite element solution of incompressible Oldroyd-B fluids flows, using different types of numerical stabilization. In this study the diffusive term (Laplacian of extra stress) is added to the tensorial constitutive relation where it is multiplied by a coefficient, that is variable in time. The goal is to make this diffusion coefficient vanish in time, so that the final solution remains unaffected by the added diffusion term.
A series of numerical tests was performed for the steady two-dimensional Oldroyd-B fluid flow in corrugated channel (tube) to compare different versions of the vanishing stabilization terms and assess their efficiency in enforcing the solution convergence, without affecting the final steady state.
|ISSN 2336-5781 (Print)
|Appears in Collections:
|CIMA - Artigos em Livros de Actas/Proceedings
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