Thermodynamically consistent modeling of granular-fluid mixtures incorporating pore pressure evolution and hypoplastic behavior
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- 作者：Julian Heß ; Yongqi Wang ; Kolumban Hutter
- 关键词：Müller ; Liu entropy principle ; Debris Flow ; Hypoplasticity ; Pore fluid pressure
- 刊名：Continuum Mechanics and Thermodynamics
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：29
- 期：1
- 页码：311-343
- 全文大小：
- 刊物类别：Engineering
- 刊物主题：Classical and Continuum Physics; Engineering Thermodynamics, Heat and Mass Transfer; Theoretical and Applied Mechanics; Structural Materials;
- 出版者：Springer Berlin Heidelberg
- ISSN：1432-0959
- 卷排序：29
文摘
This paper presents a new, thermodynamically consistent model for granular-fluid mixtures, derived with the entropy principle of Müller and Liu. Including a pressure diffusion equation combined with the concept of extra pore pressure, and hypoplastic material behavior, thermodynamic restrictions are imposed on the constitutive quantities. The model is applied to a granular-fluid flow, using a closing assumption in conjunction with the fluid pressure. While the focal point of the work is the conceptional part, i.e. the thermodynamic consistent modeling, numerical simulations with physically reasonable results for simple shear flow are also carried out.