2020年8月24日
Enskog kinetic theory of rheology for a moderately dense inertial suspension
Physical Review E
- ,
- ,
- ,
- 巻
- 102
- 号
- 2
- 開始ページ
- 022907-1
- 終了ページ
- 022907-23
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/physreve.102.022907
- 出版者・発行元
- American Physical Society (APS)
The Enskog kinetic theory for moderately dense inertial suspensions under simple shear flow is considered as a model to analyze the rheological properties of the system. The influence of the background fluid on suspended particles is modeled via a viscous drag force plus a Langevin-like term defined in terms of the background temperature. In a previous paper [Hayakawa et al., Phys. Rev. E 96, 042903 (2017)10.1103/PhysRevE.96.042903], Grad's moment method with the aid of a linear shear-rate expansion was employed to obtain a theory which gave good agreement with the results of event-driven Langevin simulations of hard spheres for low densities and/or small shear rates. Nevertheless, the previous approach had a limitation of not being applicable to the high-shear-rate and high-density regime. Thus, in the present paper, we extend the previous work and develop Grad's theory including higher-order terms in the shear rate. This improves significantly the theoretical predictions, a quantitative agreement between theory and simulation being found in the high-density region (volume fractions smaller than or equal to 0.4).
- リンク情報
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- DOI
- https://doi.org/10.1103/physreve.102.022907
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/32942481
- URL
- https://link.aps.org/article/10.1103/PhysRevE.102.022907
- URL
- http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevE.102.022907/fulltext
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85091192315&origin=inward
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85091192315&origin=inward
- ID情報
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- DOI : 10.1103/physreve.102.022907
- ISSN : 2470-0045
- eISSN : 2470-0053
- PubMed ID : 32942481
- SCOPUS ID : 85091192315