Simulation and experimental study of rheological properties of CeO2–water nanofluid

被引:1
作者
Adil Loya
Jacqueline L. Stair
Guogang Ren
机构
[1] University of Hertfordshire,School of Engineering and Technology
[2] Centre for Engineering Research Materials and Structures,Department of Pharmacy, School of Life and Medical Sciences
[3] Science and Technology Research Institute,Pharmaceutical Chemistry, Prescription and Illicit Drug Misuse
[4] University of Hertfordshire,Nanopharmaceutics
[5] Centre for Clinical Practice,undefined
[6] Safe Medicines and Drug Misuse Research,undefined
[7] Centre for Research into Topical Drug Delivery and Toxicology,undefined
[8] Health and Human Sciences Research Institute,undefined
关键词
Metal oxide nanoparticles; CeO2; LAMMPS; Rheology;
D O I
10.1007/s40089-014-0129-0
中图分类号
学科分类号
摘要
Metal oxide nanoparticles offer great merits over controlling rheological, thermal, chemical and physical properties of solutions. The effectiveness of a nanoparticle to modify the properties of a fluid depends on its diffusive properties with respect to the fluid. In this study, rheological properties of aqueous fluids (i.e. water) were enhanced with the addition of CeO2 nanoparticles. This study was characterized by the outcomes of simulation and experimental results of nanofluids. The movement of nanoparticles in the fluidic media was simulated by a large-scale molecular thermal dynamic program (i.e. LAMMPS). The COMPASS force field was employed with smoothed particle hydrodynamic potential (SPH) and discrete particle dynamics potential (DPD). However, this study develops the understanding of how the rheological properties are affected due to the addition of nanoparticles in a fluid and the way DPD and SPH can be used for accurately estimating the rheological properties with Brownian effect. The rheological results of the simulation were confirmed by the convergence of the stress autocorrelation function, whereas experimental properties were measured using a rheometer. These rheological values of simulation were obtained and agreed within 5 % of the experimental values; they were identified and treated with a number of iterations and experimental tests. The results of the experiment and simulation show that 10 % CeO2 nanoparticles dispersion in water has a viscosity of 2.0–3.3 mPas.
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页码:1 / 7
页数:6
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