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IRSN, Institut de radioprotection et de sûreté nucléaire

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Enhancing Nuclear Safety


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Analysis of heat and mass transfers in two-phase flow by coupling optical diagnostic techniques


Journal title : Experiments in Fluids
Volume : 45
Issue : 2
Pagination : 187-201
Publication date : 01/08/2008

Document type > *Article de revue

Keywords > heat and mass transfers, optic diagnostics, spray, TOSQAN

Research Unit > IRSN/DSU/SERAC/LECEV

Authors > LEMAITRE Pascal, PORCHERON Emmanuel

Publication Date > 01/08/2008

Summary

During the course of a hypothetical accident in a nuclear power plant, spray might be activated in order to reduce static pressure in the containment. To have a better understanding of the heat and mass transfers between a spray and the surrounding confined gas, non-intrusive optical measurements have to be achieved simultaneously on both phases. The coupling of Global Rainbow Refractometry with Out-Of-Focus Imaging and Spontaneous Raman Scattering Spectroscopy allows calculating the local Spalding parameter BM that describes the mass flux between the droplets and the surrounding gas.

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