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Thermal mixing in a T-junction: Novel CFD-grade measurements of the fluctuating temperature in the solid wall

Abstract : This article reports new experiments performed with the purpose of generating novel data of the fluctuating temperature inside the solid in the mixing region between hot and cold water in a T-junction. This data has been measured using a novel sensor (coefh) developed at the Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA) in Cadarache, France. These experiments are performed within the framework of the MOTHER project. The main objective of the MOTHER project is to validate various CFD approaches (such as LES, Hybrid i.e. RANS/LES and RANS) for transient heat transfer in a T-junction configuration including the pipe wall. Hence, the performed experiments have focused on accurately measuring and documenting the boundary conditions to be able to have a well-defined database for CFD validation. The tests are performed for two different Reynolds numbers 40000 and 60000 and for two different T-junction geometries; a sharp corner and a round corner.
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https://hal-cea.archives-ouvertes.fr/cea-02430130
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Submitted on : Tuesday, January 7, 2020 - 10:25:19 AM
Last modification on : Tuesday, April 28, 2020 - 11:28:13 AM

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Olivier Braillard, Richard Howard, Kristian Angele, Afaque Shams, Nicolas Edh. Thermal mixing in a T-junction: Novel CFD-grade measurements of the fluctuating temperature in the solid wall. Nuclear Engineering and Design, Elsevier, 2018, 330, pp.377-390. ⟨10.1016/j.nucengdes.2018.02.020⟩. ⟨cea-02430130⟩

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