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Gan, YB; Xu, AG; Zhang, GC; Succi, S; Xu, AG (reprint author), Inst Appl Phys & Computat Math, Natl Key Lab Computat Phys, POB 8009-26, Beijing, Peoples R China.
Discrete Boltzmann modeling of multiphase flows: hydrodynamic and thermodynamic non-equilibrium effects
Source PublicationSOFT MATTER
Language英语
AbstractA discrete Boltzmann model (DBM) is developed to investigate the hydrodynamic and thermodynamic non-equilibrium (TNE) effects in phase separation processes. The interparticle force drives changes and the gradient force, induced by gradients of macroscopic quantities, opposes them. In this paper, we investigate the interplay between them by providing a detailed inspection of various non-equilibrium observables. Based on the TNE features, we define TNE strength which roughly estimates the deviation amplitude from the thermodynamic equilibrium. The time evolution of the TNE intensity provides a convenient and efficient physical criterion to discriminate the stages of the spinodal decomposition and domain growth. Via the DBM simulation and this criterion, we quantitatively study the effects of latent heat and surface tension on phase separation. It is found that the TNE strength attains its maximum at the end of the spinodal decomposition stage, and it decreases when the latent heat increases from zero. The surface tension effects are threefold, prolong the duration of the spinodal decomposition stage, decrease the maximum TNE intensity, and accelerate the speed of the domain growth stage.
2015
Volume11Issue:26Pages:5336-5345
Subject AreaChemistry ; Materials Science ; Physics ; Polymer Science
DOIhttp://dx.doi.org/10.1039/c5sm01125f
Indexed BySCI
Funding OrganizationScience Foundation of National Key Laboratory of Computational Physics ; Science Foundation of National Key Laboratory of Computational Physics ; Science Foundation of National Key Laboratory of Computational Physics ; Science Foundation of National Key Laboratory of Computational Physics ; State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences [Y4KF151CJ1] ; State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences [Y4KF151CJ1] ; State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences [Y4KF151CJ1] ; State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences [Y4KF151CJ1] ; National Natural Science Foundation of China [11475028, 11202003, 11203001] ; National Natural Science Foundation of China [11475028, 11202003, 11203001] ; National Natural Science Foundation of China [11475028, 11202003, 11203001] ; National Natural Science Foundation of China [11475028, 11202003, 11203001] ; Science Foundation of Hebei Province [A2013409003, YQ2013013, ZD2014089] ; Science Foundation of Hebei Province [A2013409003, YQ2013013, ZD2014089] ; Science Foundation of Hebei Province [A2013409003, YQ2013013, ZD2014089] ; Science Foundation of Hebei Province [A2013409003, YQ2013013, ZD2014089]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/21127
Collection理论物理所科研产出_SCI期刊论文
Corresponding AuthorXu, AG (reprint author), Inst Appl Phys & Computat Math, Natl Key Lab Computat Phys, POB 8009-26, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Gan, YB,Xu, AG,Zhang, GC,et al. Discrete Boltzmann modeling of multiphase flows: hydrodynamic and thermodynamic non-equilibrium effects[J]. SOFT MATTER,2015,11(26):5336-5345.
APA Gan, YB,Xu, AG,Zhang, GC,Succi, S,&Xu, AG .(2015).Discrete Boltzmann modeling of multiphase flows: hydrodynamic and thermodynamic non-equilibrium effects.SOFT MATTER,11(26),5336-5345.
MLA Gan, YB,et al."Discrete Boltzmann modeling of multiphase flows: hydrodynamic and thermodynamic non-equilibrium effects".SOFT MATTER 11.26(2015):5336-5345.
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