Abstract
We study the stationary flow of an incompressible non-Newtonian fluid of Bingham type, mathematically described by means of a nonlinear boundary value problem governed by PDEs. The variational formulation which we propose is a mixed variational problem with Lagrange multipliers. First, we obtain existence, uniqueness, and stability results into an abstract framework. Then, we discuss the well-posedness of the mechanical model based on the auxiliary abstract results.
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This project has received funding from the European Union’s Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie Grant Agreement No 823731 CONMECH.
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Chivu Cojocaru, M., Matei, A. On the Weak Solvability Via Lagrange Multipliers for a Bingham Model. Mediterr. J. Math. 17, 164 (2020). https://doi.org/10.1007/s00009-020-01596-2
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DOI: https://doi.org/10.1007/s00009-020-01596-2
Keywords
- Non-Newtonian fluid
- Bingham constitutive law
- mixed variational formulation
- Lagrange multipliers
- weak solution
- fixed point
- well-posedness