雾化液滴掺混稠油的实验和数值模拟研究
Experimental and numerical simulation study of atomized droplets mixing heavy oil
查看参考文献13篇
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文摘
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稠油开采过程中,由于稠油的黏度较高和流动性差,掺稀降黏是近年来使用的主要技术手段之一。为达到稀油较为均匀的分布效果,该文提出将一个气体辅助式雾化喷嘴安装在模型套筒一侧的方法,使得稀油液滴雾化并与稠油进行掺混,通过实验和数值模拟的方法,重点研究液滴在二次破碎雾化后的物理性质,模拟雾化的滴变化后形成的液膜与底部的液压油的掺混过程,同时给出了掺稀携带量的变化规律。结果表明,液滴速度减弱后聚并现象加强,在整个流场内形成较为均匀分布的液膜和液滴,同时底部多相掺混搅动降低了混合液的黏度,当通过10.8 m³/h的气雾化1.08 m³/h的水,最终可以携带底部2.92 m³/h的油,大大提高了携带效率。研究结果验证了雾化液滴掺混稠油方法的可行性和实用性。 |
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其他语种文摘
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Due to high viscosity and poor liquidity in the heavy oil extraction, blending the crude oil with light hydrocarbons is one of main methods recently. Blending the oil with water spray for a more uniform distribution is provided in this work. The present study will concentrate efforts on the drop properties after secondary breakup when the light oil is injected into a pipe by a detachable air-blast atomizer connected with the whole experimental pipe. Meanwhile, the process, the chydraulic oil at the bottom of the pipe blended with the spray through the given tube, is also investigated by numerical simulation. The law of mixing and extraction is concluded through the experiment at the same time. The results show that droplets coalescence phenomenon plays an important role after drops velocity slows, which form the uniform distribution of droplets and liquid film in the whole flow filed. Also, multiphase mixing decreased the mixture viscosity, the carried oil is 2.92 m³/h when water is 1.08 m³/h, which enlarges the carried efficiency. The feasibility and practicability of this method are verified. |
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来源
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水动力学研究与进展. A辑
,2019,34(1):45-52 【核心库】
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DOI
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10.16076/j.cnki.cjhd.2019.01.006
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关键词
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雾化液滴
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多相掺混
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气举携带
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数值模拟
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地址
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1.
中国科学院大学工程科学学院, 北京, 100049
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中国科学院力学研究所, 北京, 100190
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中国石油化工股份有限公司石油勘探开发研究院, 北京, 100083
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-4874 |
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学科
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力学 |
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文献收藏号
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CSCD:6425661
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