https://scholars.lib.ntu.edu.tw/handle/123456789/407767
標題: | Probing heterogeneous structure of aggregates | 作者: | Yang Z. Lee D.-J. Mujumdar A. Peng X.-F. Su A. Hsu C. |
關鍵字: | CLSM;Floc;Multifractal;Structure | 公開日期: | 2008 | 卷: | 26 | 期: | 8 | 起(迄)頁: | 1018-1023 | 來源出版物: | Drying Technology | 摘要: | Naturally occurring aggregates are considered of fractal or fractal-of-fractals interior structure. Recent studies utilizing dye staining and confocal laser scanning microscopy (CLSM) techniques have revealed the extremely complex, interconnected pore networks for floc interior. Detailed structural analysis on the real floc architecture is determined for building up a comprehensive floc model. This work interprets structural characteristics of flocs using multifractal analysis. A direct method by Chhabra and Jensen properly evaluated the singularity strength and singularity spectrum on architectures of two artificial fractal systems. However, direct evaluation of multifractal characteristics of wastewater flocs has limitations, alternatively acquiring analytical results to be misleading. Particularly, the singularity spectrum presents excessively large values in the limit as q ¡÷ +¡Û and exhibits very large error bars in the limit as q ¡÷ -¡Û. This is attributable to the uneven distribution of mass in flocs and insufficient spatial resolutions provided by CLSM techniques. The flaws in applying multifractal analysis on naturally occurring objects are discussed. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407767 | ISSN: | 07373937 | DOI: | 10.1080/07373930802177719 |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。