本文主要研究内容
作者钟杰（2019）在《油气润滑两相流流型识别方法研究》一文中研究指出：随着油气润滑在工业生产中的广泛应用,油气两相流的流动特性得到了科研工作者和工程技术人员的广泛关注。本文对油气润滑系统水平管道油气两相流的流型识别方法进行了较为详细的研究,主要研究内容和结论如下:(1)推导了油气润滑水平管道油气两相流的总压降表达式。采用Fluent仿真软件,建立了油气润滑系统水平管道的二维流体域物理模型;根据油气润滑系统水平管道两相流流型转变曲线,确定了各流型气液两相的入口速度;仿真得到了油气润滑系统水平管道中常见的四种流型,并提取了各流型的压差波动信号。结果表明:油气润滑系统水平管道内油气两相流流型与压差波动信号之间存在对应关系;采用Fluent仿真方法可获取油气润滑系统两相流的压差波动信号。(2)对油气两相流各流型的压差波动信号进行了Wigner谱分析,结果表明:油气两相流的压差波动信号具有非平稳特性,在对油气两相流压差波动信号进行分析时不能采用统计分析的方法。本文采用了特征提取的方法—EMD(经验模态)分解和小波分解方法分别求解了各流型的IMF(固有模态)分量和小波分量,并计算和对比分析了它们与原始信号之间的相关系数和各分量的方差。结果表明:相较于小波分量,IMF分量与压差波动信号有更好的相关性,因此,在对油气两相流压差波动信号进行特征提取时,EMD分解比小波分解更有优势。(3)利用PSO(粒子群)算法对PNN(概率神经网络)的平滑因子σ进行了优化,将各流型压差波动信号进行EMD分解后得到的IMF分量作为PNN的输入层,对油气润滑水平管道内常见的四种流型进行了识别。结果表明,优化后的PNN模型可较好地识别油气润滑水平管道内油气两相流流型。
Abstract
sui zhao you qi run hua zai gong ye sheng chan zhong de an fan ying yong ,you qi liang xiang liu de liu dong te xing de dao le ke yan gong zuo zhe he gong cheng ji shu ren yuan de an fan guan zhu 。ben wen dui you qi run hua ji tong shui ping guan dao you qi liang xiang liu de liu xing shi bie fang fa jin hang le jiao wei xiang xi de yan jiu ,zhu yao yan jiu nei rong he jie lun ru xia :(1)tui dao le you qi run hua shui ping guan dao you qi liang xiang liu de zong ya jiang biao da shi 。cai yong Fluentfang zhen ruan jian ,jian li le you qi run hua ji tong shui ping guan dao de er wei liu ti yu wu li mo xing ;gen ju you qi run hua ji tong shui ping guan dao liang xiang liu liu xing zhuai bian qu xian ,que ding le ge liu xing qi ye liang xiang de ru kou su du ;fang zhen de dao le you qi run hua ji tong shui ping guan dao zhong chang jian de si chong liu xing ,bing di qu le ge liu xing de ya cha bo dong xin hao 。jie guo biao ming :you qi run hua ji tong shui ping guan dao nei you qi liang xiang liu liu xing yu ya cha bo dong xin hao zhi jian cun zai dui ying guan ji ;cai yong Fluentfang zhen fang fa ke huo qu you qi run hua ji tong liang xiang liu de ya cha bo dong xin hao 。(2)dui you qi liang xiang liu ge liu xing de ya cha bo dong xin hao jin hang le Wignerpu fen xi ,jie guo biao ming :you qi liang xiang liu de ya cha bo dong xin hao ju you fei ping wen te xing ,zai dui you qi liang xiang liu ya cha bo dong xin hao jin hang fen xi shi bu neng cai yong tong ji fen xi de fang fa 。ben wen cai yong le te zheng di qu de fang fa —EMD(jing yan mo tai )fen jie he xiao bo fen jie fang fa fen bie qiu jie le ge liu xing de IMF(gu you mo tai )fen liang he xiao bo fen liang ,bing ji suan he dui bi fen xi le ta men yu yuan shi xin hao zhi jian de xiang guan ji shu he ge fen liang de fang cha 。jie guo biao ming :xiang jiao yu xiao bo fen liang ,IMFfen liang yu ya cha bo dong xin hao you geng hao de xiang guan xing ,yin ci ,zai dui you qi liang xiang liu ya cha bo dong xin hao jin hang te zheng di qu shi ,EMDfen jie bi xiao bo fen jie geng you you shi 。(3)li yong PSO(li zi qun )suan fa dui PNN(gai lv shen jing wang lao )de ping hua yin zi σjin hang le you hua ,jiang ge liu xing ya cha bo dong xin hao jin hang EMDfen jie hou de dao de IMFfen liang zuo wei PNNde shu ru ceng ,dui you qi run hua shui ping guan dao nei chang jian de si chong liu xing jin hang le shi bie 。jie guo biao ming ,you hua hou de PNNmo xing ke jiao hao de shi bie you qi run hua shui ping guan dao nei you qi liang xiang liu liu xing 。
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论文详细介绍
论文作者分别是来自北方工业大学的钟杰，发表于刊物北方工业大学2019-06-25论文，是一篇关于油气润滑论文,压差波动信号论文,分解论文,小波分解论文,北方工业大学2019-06-25论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自北方工业大学2019-06-25论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：油气润滑论文; 压差波动信号论文; 分解论文; 小波分解论文; 北方工业大学2019-06-25论文;