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MRI temperature and velocity measurements in a fluid layer with heat transfer

Abstract : Magnetic Resonance Thermometry (MRT) is an innovative technique which can provide 2D and 3D temperature measurements using Magnetic Resonance Imaging (MRI). Despite the powerful advantages of MRT, this technique is sparcely developed and used in the engineering sciences. In this paper, we investigate the possibility to measure temperatures with MRI in a fluid layer submitted to heat transfer. By imposing a vertical temperature gradient, we study the temperature fields in both conductive and convective regimes. The temperature fields are obtained by measuring the transverse relaxation time T 2 in glycerol, a Newtonian fluid. The MRT protocol is described in detail and the results are presented. We show that for a conductive regime, temperature measurements are in very good agreement with the theoretical profile. In the convective regime, when comparing the temperature and velocity fields obtained by MRI, we get an excellent agreement in terms of flow structure. Temperature uncertainties are found to be less than 1 • C for all our results.
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Submitted on : Thursday, January 25, 2018 - 5:12:57 PM
Last modification on : Wednesday, November 3, 2021 - 7:55:49 AM
Long-term archiving on: : Friday, May 25, 2018 - 7:51:17 AM


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Sébastien Leclerc, C. Métivier. MRI temperature and velocity measurements in a fluid layer with heat transfer. Experiments in Fluids, Springer Verlag (Germany), 2018, 59 (2), ⟨10.1007/s00348-018-2494-3⟩. ⟨hal-01693075⟩



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