Dissipative particle dynamics simulation on the rheological properties of heavy crude oil

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	Dissipative particle dynamics simulation on the rheological properties of heavy crude oil
	Wang, Sibo 1,2; Xu, Junbo 1; Wen, Hao 1
刊名	MOLECULAR PHYSICS
	2015-11-02
卷号	113 期号:21 页码:3325-3335
关键词	DPD heavy crude oil rheological properties viscosity emulsion
ISSN号	0026-8976
英文摘要	The rheological properties of heavy crude oil have a significant impact on the production, refining and transportation. In this paper, dissipative particle dynamics (DPD) simulations were performed to study the effects of the addition of light crude oil and emulsification on the rheological properties of heavy crude oil. The simulation results reflected that the additionof light crude oil reduced the viscosity effectively. The shear thinning behaviour of crude oil mixtures were becoming less distinct as the increase of the mass fraction of light crude oil. According to the statistics, the shear had an influence on the aggregation and spatial orientation of asphaltene molecules. In addition, the relationship between the viscosity and the oil mass fraction was investigated in the simulations of emulsion systems. The viscosity increased with the oil mass fraction slowly in oil-in-water emulsions. When the oil mass fraction was higher than 50%, the increase became much faster since systems had been converted into water-in-oil emulsions. The equilibrated morphologies of emulsion systems were shown to illustrate the phase inversion. The surfactant-like feature of asphaltenes was also studied in the simulations.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Atomic, Molecular & Chemical
研究领域[WOS]	Physics
关键词[WOS]	DENSE COLLOIDAL SUSPENSIONS ; MOLTEN ALKALI-HALIDES ; PIPELINE TRANSPORTATION ; MOLECULAR-DYNAMICS ; MESOSCOPIC SIMULATION ; IN-WATER ; ASPHALTENE ; VISCOSITY ; FLOW ; EMULSIONS
收录类别	SCI
语种	英语
WOS记录号	WOS:000363980300021
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/19813]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Sibo,Xu, Junbo,Wen, Hao. Dissipative particle dynamics simulation on the rheological properties of heavy crude oil[J]. MOLECULAR PHYSICS,2015,113(21):3325-3335.
APA	Wang, Sibo,Xu, Junbo,&Wen, Hao.(2015).Dissipative particle dynamics simulation on the rheological properties of heavy crude oil.MOLECULAR PHYSICS,113(21),3325-3335.
MLA	Wang, Sibo,et al."Dissipative particle dynamics simulation on the rheological properties of heavy crude oil".MOLECULAR PHYSICS 113.21(2015):3325-3335.