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Article Dans Une Revue International Journal of Heat and Mass Transfer Année : 2017

Experimental transfer functions identification: Thermal impedance and transmittance in a channel heated by an upstream unsteady volumetric heat source

Résumé

Linear Time Invariant (LTI) systems can be modeled by transfer functions linking inputs to outputs through convolution products. This concept is experimentally validated in the case of an upstream heated channel with thick walls and steady liquid flowrate using two calibration experiments with different unsteady upstream heating powers. Proper identification of transfer functions (impedances and transmittances) requires the inversion of experimental temperature measurement through regularization techniques. Truncated Singular Value Decomposition (TSVD) and Zero-order Tikhonov regularization are tested and compared for this application.
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Dates et versions

hal-01596891 , version 1 (28-09-2017)

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Waseem Al Hadad, Denis Maillet, Yves Jannot. Experimental transfer functions identification: Thermal impedance and transmittance in a channel heated by an upstream unsteady volumetric heat source. International Journal of Heat and Mass Transfer, 2017, 116, pp.931-939. ⟨10.1016/j.ijheatmasstransfer.2017.09.079⟩. ⟨hal-01596891⟩
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