基于小波变换的气液两相流流型信号的奇异性特征

在室内气液两相试验环道上测试了气液两相水平管流中分层波状流向段塞流的转变过程 ,采用基于小波变换的奇异性理论对流型信号局部点的奇异性进行了量化分析。结果表明 ,分层波状流和段塞流信号局部点的奇异性之间存在显著差异 ,其Lipschitz指数可以作为流型量化描述的一个新指标

Analysis on singularity characteristics of flow pattern signals of wavelet transform in gas-liquid two-phase flow pipelines

Flow pattern quantization formulation is a key to gas liquid two phase flow pattern identification. The flow pattern signals in the transition of stratified wavy flow into slug flow in the gas\|liquid two phase flow pipeline were measured in a general gas liquid two phase flow experimental facility. The singularity of these flow pattern signals was analyzed with singularity theory based on wavelet transform. The singularity between the two phase flow pattern signals is obviously different, and their Lipschitz exponentials can be regarded as a new quantization symbol for flow pattern identification.