Simulation of a set of large‐size thermal enclosures by a substructured reduced‐order model
| Autor: | Benjamin Gaume, Frédéric Joly, O. Quéméner |
|---|---|
| Přispěvatelé: | Laboratoire de Mécanique et d'Energétique d'Evry (LMEE), Université d'Évry-Val-d'Essonne (UEVE)-Université Paris-Saclay |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Reduced model
Materials science 020209 energy Finite elements Enclosure 02 engineering and technology 01 natural sciences 010305 fluids & plasmas Reduced order Set (abstract data type) 0103 physical sciences Thermal 0202 electrical engineering electronic engineering information engineering Thermal simulation Fluid Flow and Transfer Processes Thermal contact conductance Thermal contact resistance Modal reduction Mechanics [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph] Condensed Matter Physics Finite element method Substructuring Large size |
| Zdroj: | Experimental Heat Transfer Experimental Heat Transfer, Taylor & Francis, In press, ⟨10.1002/htj.22029⟩ Experimental Heat Transfer, In press, ⟨10.1002/htj.22029⟩ |
| ISSN: | 0891-6152 1521-0480 |
| DOI: | 10.1002/htj.22029⟩ |
| Popis: | International audience; In the context of simulations of coupled thermal enclosures, we present here a substructuring technique adapted to the amalgam reduced-order modal model (AROMM). This technique consists of splitting the geometry into different zones. A modal model is then applied to each zone, and the coupling of the resulting models is performed via a thermal contact resistance. This technique allows the consideration of physical thermal resistances between different components of the geometry, as well as the making of fictitious cuts within a continuous domain, when its large size causes difficulties in obtaining the global reduced model. Applied to the simulation of a simplified component of a liquefied natural gas carrier, the use of a substructured model with 200 modes allows an access to the whole temperature field with a maximum difference near 1 K and an average difference of the order of 0.2 K, compared with a conventional Lagrange finite-element model of shell type, which requires 60 times longer calculation. |
| Databáze: | OpenAIRE |
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