Nitsche stabilized Virtual element approximations for a Brinkman problem with mixed boundary conditions
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| Format: | Preprint |
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2024
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| _version_ | 1866914832300638208 |
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| author | Mora, David Vellojin, Jesus Verma, Nitesh |
| author_facet | Mora, David Vellojin, Jesus Verma, Nitesh |
| contents | In this paper, we formulate, analyse and implement the discrete formulation of the Brinkman problem with mixed boundary conditions, including slip boundary condition, using the Nitsche's technique for virtual element methods. The divergence conforming virtual element spaces for the velocity function and piecewise polynomials for pressure are approached for the discrete scheme. We derive a robust stability analysis of the Nitsche stabilized discrete scheme for this model problem. We establish an optimal and vigorous a priori error estimates of the discrete scheme with constants independent of the viscosity. Moreover, a set of numerical tests demonstrates the robustness with respect to the physical parameters and verifies the derived convergence results. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2406_07724 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Nitsche stabilized Virtual element approximations for a Brinkman problem with mixed boundary conditions Mora, David Vellojin, Jesus Verma, Nitesh Numerical Analysis In this paper, we formulate, analyse and implement the discrete formulation of the Brinkman problem with mixed boundary conditions, including slip boundary condition, using the Nitsche's technique for virtual element methods. The divergence conforming virtual element spaces for the velocity function and piecewise polynomials for pressure are approached for the discrete scheme. We derive a robust stability analysis of the Nitsche stabilized discrete scheme for this model problem. We establish an optimal and vigorous a priori error estimates of the discrete scheme with constants independent of the viscosity. Moreover, a set of numerical tests demonstrates the robustness with respect to the physical parameters and verifies the derived convergence results. |
| title | Nitsche stabilized Virtual element approximations for a Brinkman problem with mixed boundary conditions |
| topic | Numerical Analysis |
| url | https://arxiv.org/abs/2406.07724 |