https://scholars.lib.ntu.edu.tw/handle/123456789/605823
標題: | Euler characteristic during drying of porous media | 作者: | Shih, Yi-Hsuan SHAO-YIU HSU Huang, Qun-Zhan Lamorski, Krzysztof MING-CHE HU Tsao, Chia-Wen Sławiński, Cezary Shokri, Nima |
關鍵字: | Betti numbers;evaporation;micromodel;porous media flow;X-ray CT | 公開日期: | 2022 | 卷: | 40 | 期: | 4 | 起(迄)頁: | 781 - 795 | 來源出版物: | Drying Technology | 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. ? 2021 Taylor & Francis Group, LLC. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121103404&doi=10.1080%2f07373937.2021.2007946&partnerID=40&md5=d773aad469019687c3f57fa3c7134ba6 https://scholars.lib.ntu.edu.tw/handle/123456789/605823 |
ISSN: | 07373937 | DOI: | 10.1080/07373937.2021.2007946 |
顯示於: | 生物環境系統工程學系 |
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