CFD analysis of a TG–DSC apparatus: Application to the indium heating and phase change process

Daniel De la Cuesta de Cal, Miguel Ángel Gómez, Jacobo Porteiro, Lara Febrero, Enrique Granada, Elena Arce

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Abstract

A ThermoGravimetric analyser with differential scanning calorimetry (TG–DSC) has been studied during the fusion of an indium sample using both an experimental procedure and a CFD simulation. To do so, a CAD model of the real device was built and meshed in detail, in order to take into account the small scale processes which occur inside the crucibles. Several theoretical models, some previously existing in the CFD software used and others developed ad hoc, were applied to simulate the whole facility. Therefore, realistic boundary conditions and a PID-based control system already developed for previous studies had to be used. The validation of the CFD model was done by comparing the outcome of the resulting simulation to the results obtained by experimental procedure in a case where natural convection is the main heat and mass transfer mechanism. This comparison was made for two different heating rates inside the furnace. Typical characteristics of phase change process inside a TG-DSC as thermal lag, onset temperature or heat flow exchange during the fusion could be analysed. As well, a more detailed approach to physical phenomena taking place inside the furnace could be done, since CFD simulations allow to obtain data which is not achievable experimentally. Besides, a valid CFD model for a TG-DSC could be later used in further CFD simulations.
Original languageEnglish
Pages (from-to)641-650
Number of pages10
JournalJournal of Thermal Analysis and Calorimetry
Volume118
Issue number2
DOIs
Publication statusPublished - 1 Nov 2014
Externally publishedYes

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De la Cuesta de Cal, D., Gómez, M. Á., Porteiro, J., Febrero, L., Granada, E., & Arce, E. (2014). CFD analysis of a TG–DSC apparatus: Application to the indium heating and phase change process. Journal of Thermal Analysis and Calorimetry, 118(2), 641-650. https://doi.org/10.1007/s10973-014-3734-2