Stress balance for a viscous flow with a single rolling particle
文献类型：会议论文
| 作者 | Biegert, Edward K.1; Vowinckel, Bernhard1; Hua, Leina1,2; Meiburg, Eckart1 |
| 出版日期 | 2018-09-05 |
| 会议日期 | September 5, 2018 - September 8, 2018 |
| 会议地点 | Lyon-Villeurbanne, France |
| 关键词 | Budget control - Porous materials - Sediment transport - Shore protection - Erosion - Sedimentation - Turbulent flow |
| 卷号 | 40 |
| DOI | 10.1051/e3sconf/20184004003 |
| 英文摘要 | One of the most important aspects in hydraulic engineering is to describe flows over mobile porous media in a continuum sense to derive models for sediment transport. This remains a challenging task due to the complex coupling of the particle and the fluid phase. Computational Fluid Dynamics can provide the data needed to understand the coupling of the two phases. To this end, we carry out grain-resolving Direct Numerical Simulations of multiphase flow. The particle phase is introduced by the Immersed Boundary Method and the particle-particle interaction is described by a sophisticated Discrete Element Method. We derive the stress budgets of the fluid and the particle phases separately through a rigorous analysis of the governing equations using the Double Averaging Methodology and the Coarse-Graining Method. As a next step, we perform a simple simulation of a heavy particle exposed to a Poiseuille flow rolling along a wall to understand the physical implications of the fluid-particle coupling. All terms of the stress balances can be computed in a straightforward manner allowing to close the budgets for the two phases separately. However, we encounter problems when attempting to combine the fluid-resolved local stresses with the coarse-grained particle stresses into a single balance for the fluid-particle mixture. 漏 The Authors, published by EDP Sciences, 2018. |
| 项目编号 | This research is supported in part by the U.S. Department of Energy Office of Science Graduate Fellowship Program (DOE SCGF), made possible in part by the American Recovery and Reinvestment Act of 2009, administered by ORISE-ORAU under contract No. DE-AC05-06OR23100. It is also supported by the Petroleum Research Fund, administered by the American Chemical Society, grant number 54948-ND9. BV gratefully acknowledges the Feodor&ndash ; Lynen scholarship provided by the Alexander von Humboldt Foundation, Germany. |
| 资助机构 | EDP Sciences |
| 会议录 | 9th International Conference on Fluvial Hydraulics, River Flow 2018
 |
| 学科主题 | Computational Fluid Dynamics |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/59280]  |
| 作者单位 | 1.Department of Mechanical Engineering, University of California, Santa Barbara; CA; 93106, United States 2.State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China |
| 推荐引用方式 GB/T 7714 | Biegert, Edward K.,Vowinckel, Bernhard,Hua, Leina,et al. Stress balance for a viscous flow with a single rolling particle[C]. 见:. Lyon-Villeurbanne, France. September 5, 2018 - September 8, 2018. |
入库方式： OAI收割
来源：过程工程研究所
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