Parametric POD-Galerkin Model Order Reduction for Unsteady-State Heat Transfer Problems
| Autor: | Georgaka, Sokratia, Stabile, Giovanni, Rozza, Gianluigi, Bluck, Michael J |
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| Rok vydání: | 2018 |
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| Druh dokumentu: | Working Paper |
| Popis: | A parametric reduced order model based on proper orthogonal decomposition with Galerkin projection has been developed and applied for the modeling of heat transport in T-junction pipes which are widely found in nuclear power plants. Thermal mixing of different temperature coolants in T-junction pipes leads to temperature fluctuations and this could potentially cause thermal fatigue in the pipe walls. The novelty of this paper is the development of a parametric ROM considering the three dimensional, incompressible, unsteady Navier-Stokes equations coupled with the heat transport equation in a finite volume approximation. Two different parametric cases are presented in this paper: parametrization of the inlet temperatures and parametrization of the kinematic viscosity. Different training spaces are considered and the results are compared against the full order model. Comment: 27 pages, 16 figures, 5 tables |
| Databáze: | arXiv |
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