, Volume 45, Issue 2, pp 187-201

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

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Abstract

During the course of a hypothetical accident in a nuclear power plant, spraying might be actuated to reduce static pressure in the containment. To acquire a better understanding of the heat and mass transfers between a spray and the surrounding confined gas, non-intrusive optical measurements have to be carried out simultaneously on both phases. The coupling of global rainbow refractometry with out-of-focus imaging and spontaneous Raman scattering spectroscopy allows us to calculate the local Spalding parameter B M, which is useful in describing heat transfer associated with two-phase flow.