Euler characteristic during drying of porous media

被引：3

作者：

Shih, Yi-Hsuan ^{[1
]}

Hsu, Shao-Yiu ^{[1
]}

Huang, Qun-Zhan ^{[1
]}

Lamorski, Krzysztof ^{[2
]}

Hu, Ming-Che ^{[1
]}

Tsao, Chia-Wen ^{[3
]}

Slawinski, Cezary ^{[2
]}

Shokri, Nima ^{[4
]}

机构：

[1] Natl Taiwan Univ, Dept Bioenvironm Syst Engn, Taipei 10617, Taiwan

[2] Polish Acad Sci, Inst Agrophys, Lublin, Poland

[3] Natl Cent Univ, Dept Mech Engn, Taoyuan, Taiwan

[4] Hamburg Univ Technol, Inst Geohydroinformat, Hamburg, Germany

来源：

DRYING TECHNOLOGY | 2022年 / 40卷 / 04期

关键词：

Betti numbers; porous media flow; evaporation; micromodel; X-ray CT; SALINE WATER EVAPORATION; FLOW; MECHANISMS; IMPACT;

D O I：

10.1080/07373937.2021.2007946

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This study aims to elucidate the dynamics of fluid topology during drainage and evaporation of wetting and non-wetting fluids via evaluation of their Euler characteristic (EC) and Betti numbers from designed experiments. The results showed that the EC of the non-wetting fluid remained constant at a high wetting fluid saturation and then decreased nonlinearly. However, the EC of the wetting fluid exhibited more complex trends. In the 2-D micromodel, the number of loops decreased monotonously, reached zero, and remained constant for lower saturations, while the number of distinct components fluctuated because of the appearance and disappearance of disconnected clusters. In the 2-D model, the number of distinct components played a significant role; in the 3-D X-ray CT experiment, the number of loops of pendular rings dominated the EC. The findings suggest that the trends observed in the 2-D micromodel may not apply under 3-D conditions.

引用

页码：781 / 795

页数：15

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