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Instrumentation study for aspersion cooling experiments aiming optimal estimation of the heat flux dissipation by 2D inverse heat conduction problems

Abstract : Cooling experiments usually require using many thermocouples to better characterize the heat transfer processes, but there is usually a limitation on the maximum number of thermocouples to be used, because of either limited acquisition channels or limited budget. This paper presents an experimentdesign process to guide choosing the number of thermocouples to ensure a high-quality inversion and accurate heat flux estimations. Two main criteria define the quality of the instrumentation: 1) the agreement between the simulated heat flux (imposed in the numerical simulations) and that obtained by an inverse method, and 2) the agreement between the calculated temperature profiles along the sample thickness using the simulated and estimated heat fluxes. We found that large errors in the estimated heat flux can be captured by estimating the central thermocouples measurements, but not if the difference between estimated and simulated boundary conditions is small.
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https://hal.univ-lorraine.fr/hal-03530296
Contributor : Michel Gradeck Connect in order to contact the contributor
Submitted on : Monday, January 17, 2022 - 6:48:14 PM
Last modification on : Friday, January 28, 2022 - 3:39:05 AM
Long-term archiving on: : Monday, April 18, 2022 - 9:35:07 PM

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Arthur Oliveira, Soumaya Sokakini, David MarÉchal, Teixeira Julien, Vincent Schick, et al.. Instrumentation study for aspersion cooling experiments aiming optimal estimation of the heat flux dissipation by 2D inverse heat conduction problems. ECHT 2021 and QDE – 2nd International Conference on Quenching and Distortion Engineering, AWT - Arbeitsgemeinschaft Wärmebehandlung und Werkstofftechnik, Apr 2021, Online, Germany. ⟨hal-03530296⟩

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