Identification of gas-liquid flow regimes from a space-frequency representation

This note presents a method for two-phase flow regime identification The di agnostic, based on signal characterization with three parameters (frequency , space and shape), has been qualified with horizontal air-water flow. Afte r a review of the main results obtained with different methods based on sig nal analysis, like time-frequency analysis, we show that a space-frequency representation is well suited to discriminate and classify the flow regimes . (C) Academie des sciences/Elsevier Paris.