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Simulation of a set of large‐size thermal enclosures by a substructured reduced‐order model

Abstract : 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.
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https://hal.archives-ouvertes.fr/hal-03122649
Contributor : Frédéric Davesne Connect in order to contact the contributor
Submitted on : Wednesday, January 27, 2021 - 11:00:57 AM
Last modification on : Wednesday, September 15, 2021 - 11:56:01 AM

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Benjamin Gaume, Frédéric Joly, Olivier Quemener. Simulation of a set of large‐size thermal enclosures by a substructured reduced‐order model. Experimental Heat Transfer, Taylor & Francis, In press, ⟨10.1002/htj.22029⟩. ⟨hal-03122649⟩

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