On-line indirect thermal measurement in a radiant furnace by a reduced modal model

Benjamin Gaume (1) , Yassine Rouizi (1) , Frédéric Joly (1) , Olivier Quéméner (1)

1 LMEE - Laboratoire de Mécanique et d'Energétique d'Evry

We propose an original method to recover the whole thermal field of a heated object on a furnace from a few measurement points. The radiant thermal source is first identified via a low order reduced model based on AROMM (Amalgam Reduced Order Modal Model) method. From this identified temperature, the thermal field is then recovered by direct simulation using a reduced model of higher order which leads to a better precision. This process is applied to a complex titanium object heated by two radiant panels placed in the furnace. From two measurement points, the temperature of the heated object is recovered on-line, with a mean error below 3K.

Mots clés: Industrial furnace; Inverse problem; Radiosity method; Reduced modal model; Thermal radiation

Domaines: Mécanique [physics.med-ph]

Benjamin Gaume, Yassine Rouizi, Frédéric Joly, Olivier Quéméner. On-line indirect thermal measurement in a radiant furnace by a reduced modal model. International Journal of Heat and Mass Transfer, 2021, 179, pp.121678. ⟨10.1016/j.ijheatmasstransfer.2021.121678⟩. ⟨hal-03311589⟩