西安石油大学学报（自然科学版）2012，Vol.27Issue(5)：58-62,5.
气液两相段塞流的PSD和PDF特征分析
Analysis of the PSD and PDF characteristics of gas-liquid slug flow
摘要
Abstract
In the gas-liquid pipeline transmission, slug flow is the most common flow regime, which brings a lot of trouble to normal running of the pipeline.The probability density function (PDF) and the power spectral density function (PSD) characteristics of the pressure and the pressure difference of the slug flow under different conditions are obtained by a lot of experiments and the statistical a-nalysis of experimental results. The experimental results are collected and processed using LabVIEW platform. It is shown that,the pres-sure PDF of the slug flow may present single-peak,double-peak or multi-peak distribution and the double-peak distribution is the most common; the pressure difference PDF of slug flow accords with normal distribution, that is, it presents single-peak distribution; The PSD of slug flow gradually reduces with the increase of frequency, and two obvious characteristic peaks appear in the frequency range. The PSD and PDF characteristics of gas-liquid slug flow can be used for the identification of the flow patterns of gas-liquid two-phase flow, which can guide effectively the design and running of the multiphase pipeline system.关键词
气液两相流/段塞流/PSD/PDF/流型识别Key words
gas-liquid two-phase flow/slug flow/probability density function (PDF) /power spectrum density function (PSD) /flow pattern recognition分类
能源科技引用本文复制引用
肖荣鸽,魏炳乾,沙海涛,姚培芬,易冬蕊..气液两相段塞流的PSD和PDF特征分析[J].西安石油大学学报（自然科学版）,2012,27(5):58-62,5.基金项目
陕西省教育厅专项科研计划项目"含蜡热油输送管道蜡沉积规律及清防蜡技术研究"(项目编号:11JK0787) （项目编号:11JK0787）
西安石油大学青年创新基金研究项目"低输量含蜡原油输油管道优化运行研究"(项目编号:2010QN003) （项目编号:2010QN003）
