Abstract

It is suggested that the one-time spatial correlation function of density fluctuations can be used for two-phase flow identification. The correlation function of density fluctuations is assumed locally isotropic for most flow regimes with a correlation distance which is small compared to the system dimensions. A new procedure, based on the cross-correlation of radiation attenuation signals, is proposed by which the local spatial correlation function can be measured at any point of a propagating two-phase medium. The method is also suitable for determining local vapour velocity and local average void fraction.

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