IMECH-IR  > 流固耦合系统力学重点实验室
Viscoelastic characteristics of heavy crude-oil-water two-phase dispersed mixtures
Feng XX; Zhang J(张健); Zhang D(张栋); Xu JY(许晶禹)
AbstractThe viscoelastic characteristics of unstable heavy crude-oil-water dispersed mixtures are investigated to improve pipeline transportation. The effects of temperature, dispersed phase volume fraction, and droplet size distribution are considered on experiments. And, the unstable characteristics of heavy crude-oil-water dispersed mixtures, which display the similar droplet size distribution as the two-phase pipeline flow, is emphasized in this study. As a result, the mixing of water into heavy crude oil does not considerably affect the storage modulus that maintains a constant value even with the changing oil volume fractions. The loss modulus increases with the increased oil volume fractions of the oil-in-water dispersed mixtures. It increases to its maximum value when the oil volume fraction increases to the phase inversion point of oil-water mixtures. After the phase inversion point, the loss modulus decreases as the oil volume fraction increases which can be described by the modified Mooney model accurately. The viscoelastic parameters decrease with increasing temperature because the mechanical strength of the interfacial film and the ability to resist droplet deformation due to shear force decrease when the temperature increases. The storage modulus, loss modulus, and complex viscosity increase as the median diameter decreasing with the approximate exponent behaviors. This is because the link force between two droplets is increased by a smaller distance through a longer stirring time which will decrease the median diameter. Also, the smaller droplet, which is more difficult to deform by shear stress, can increase the values of the viscoelastic parameters. Furthermore, the critical elastic dominant and viscous dominant are investigated through the critical frequency. In conclusion, the unstable heavy crude-oil-water dispersed mixture displays the great different viscoelastic characteristics compared to the normal crude-oil-water emulsions. The unstable characteristics must be considered in the design of the heavy crude oil and water two-phase dispersed flow system. It is important for understanding the pipeline transportation system of heavy crude-oil-water mixtures.
KeywordHeavy crude-oil-water mixture Unstable Viscoelasticity Phase fraction Droplet size distribution
Indexed BySCI ; EI
WOS IDWOS:000460395200013
WOS Research AreaEnergy & Fuels ; Engineering, Petroleum
WOS SubjectEnergy & Fuels ; Engineering
Funding OrganizationNational Natural Science Foundation of China [51509235] ; Strategic Priority Research Program of the Chinese Academy of Science [XDB22030101]
ContributorZhang, J ; Xu, JY
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.{Feng, Xin-Xin、Zhang, Jian、Zhang, Dong、Xu, Jing-Yu} Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
2.{Zhang, Jian、Zhang, Dong、Xu, Jing-Yu} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Feng XX,Zhang J,Zhang D,et al. Viscoelastic characteristics of heavy crude-oil-water two-phase dispersed mixtures[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2019,176:141-149.
APA Feng XX,张健,张栋,&许晶禹.(2019).Viscoelastic characteristics of heavy crude-oil-water two-phase dispersed mixtures.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,176,141-149.
MLA Feng XX,et al."Viscoelastic characteristics of heavy crude-oil-water two-phase dispersed mixtures".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 176(2019):141-149.
Files in This Item: Download All
File Name/Size DocType Version Access License
Jp2019051.pdf(2644KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Feng XX]'s Articles
[张健]'s Articles
[张栋]'s Articles
Baidu academic
Similar articles in Baidu academic
[Feng XX]'s Articles
[张健]'s Articles
[张栋]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Feng XX]'s Articles
[张健]'s Articles
[张栋]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Jp2019051.pdf
Format: Adobe PDF
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.