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模拟井中油气水三相泡状流流型的分形与混沌特征 被引量:3

FRACTAL AND CHAOTIC CHARACTERISTICS OF OIL-GAS-WATER THREE PHASE BUBBLE FLOW PATTERN
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摘要 应用分形及混沌理论,对油气水三相流模拟装置中采集的油气水三相泡状流混合密度波动信号进行了表征,提取的分形维数及混沌吸引子相关维分别在1.1-1.282及4.13-5.87之间.对分相含率(含水率、含气率、含油率)相同而总流速不同的情况,其分形维数及混沌吸引子相关维随总流速呈现相同的变化趋势,从功率谱特征曲线的波动程度上也验证了分形维数及混沌吸引子相关维随总流速变化趋势的正确性.另外,还对混合密度时间序列波动信号提取了最大Lyapunov指数,证明了垂直上升管中油气水三相泡状流是-混沌系统.
出处 《地球物理学报》 SCIE EI CAS CSCD 北大核心 2001年第z1期266-274,共9页 Chinese Journal of Geophysics
基金 中国石油天然气集团公司"九五"重点资助项目(960010-01-04).
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