Open AccessIdentification of radiant source in an enclosure by reduced model
Author(s) -
Benjamin Gaume,
Yassine Rouizi,
Frédéric Joly,
Olivier Quéméner
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2116/1/012112
Subject(s) - enclosure , matlab , source model , thermal radiation , thermal , minification , computer science , mechanics , materials science , algorithm , mathematics , thermodynamics , physics , mathematical optimization , telecommunications , theoretical computer science , operating system
We propose an original method to recover from a few measurement points the integrity of the temperature field of a furnace heated by a radiant thermal source. The radiant thermal source is first identified via a low order reduced model based on based on AROMM (Amalgam Reduced Order Modal Model) method which preserves the integrity of the geometry. The minimization is performed via a trust-region reflective least squares algorithm implemented in MATLAB “lsqcurvefit” function. From that identified heat flux, the integrity of the thermal field is then recovered by direct simulation thanks to a reduced model of higher rank to have a better precision. The treated application is a complex titanium piece heated by two radiant panels placed in a furnace. With four measuring points, the temperature of the whole thermal scene is retrieved at all times with an average error around 1 K on the studied object.