TY - JOUR N2 - Gas-liquid flows abound in a great variety of industrial processes. Correct recognition of the regimes of a gasliquid flow is one of the most formidable challenges in multiphase flow measurement. Here we put forward a novel approach to the classification of gas-liquid flow patterns. In this method a flow-pattern map is constructed based on the average energy of intrinsic mode function and the volumetric void fraction of gas-liquid mixture. The intrinsic mode function is extracted from the pressure fluctuation across a bluff body using the empirical mode decomposition technique. Experiments adopting air and water as the working fluids are conducted in the bubble, plug, slug, and annular flow patterns at ambient temperature and atmospheric pressure. Verification tests indicate that the identification rate of the flow-pattern map developed exceeds 90%. This approach is appropriate for the gas-liquid flow pattern identification in practical applications. L1 - http://www.czasopisma.pan.pl/Content/90035/PDF/Journal10178-VolumeXIXIssue4_13.pdf L2 - http://www.czasopisma.pan.pl/Content/90035 PY - 2012 IS - No 4 EP - 766 DO - 10.2478/v10178-012-0067- KW - gas-liquid flow pattern KW - flow-pattern map KW - pressure fluctuation KW - bluff body KW - signal energy KW - intrinsic mode function KW - empirical mode decomposition. A1 - Sun Zhiqiang A1 - Gong Hui PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation DA - 2012 T1 - Energy of Intrinsic Mode Function for Gas-Liquid Flow Pattern Identification SP - 759 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/90035 T2 - Metrology and Measurement Systems ER -