Abstract
In this article we study the long-time behaviour of a system of nonlinear Partial Differential Equations (PDEs) modelling the motion of incompressible, isothermal and conducting bipolar fluids in presence of magnetic field. We mainly prove the existence of a global attractor denoted by \(\mathcal{A}\) for the semigroup associated to the aforementioned system of nonlinear PDEs. We also show that this semigroup is uniformly differentiable on \(\mathcal{A}\). This fact enables us to go further and prove that the attractor \(\mathcal{A}\) is of finite-dimensional and we give an explicit bounds for its Hausdorff and fractal dimensions.
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Acknowledgement
The author’s research is supported by the Austrian Science Foundation through the Lise-Meitner-Programm M1487.
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Razafimandimby, P.A. Some Qualitative Properties of the Solution to the Magnetohydrodynamic Equations for Nonlinear Bipolar Fluids. Acta Appl Math 138, 213–240 (2015). https://doi.org/10.1007/s10440-014-9964-2
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DOI: https://doi.org/10.1007/s10440-014-9964-2
Keywords
- Non-Newtonian fluids
- Bipolar fluids
- Shear thinning fluids
- MHD
- Magnetohydrodynamics
- Asymptotic behavior
- Long-time behavior
- Global attractor
- Hausdorff dimension
- Fractal dimension