https://scholars.lib.ntu.edu.tw/handle/123456789/161984
標題: | 利用三維顆粒顯像儀分析水與土運動之研究(2/3) | 作者: | 楊德良 | 公開日期: | 2003 | 出版社: | 臺北市:國立臺灣大學水工試驗所 | 摘要: | The three-year research programme pursues the development of novel experimental methods for the laboratory study of debris flows and flowslides. Transparent access to the micromechanics of liquid-granular flows is sought through a combination of three components: 1) liquid and granular media with special optical properties allowing unhindered 3D imaging; 2) a tilting flume equipped with two recirculation circuits for the liquid and granular phases; 3) digital imaging algorithms allowing acquisition and analysis of the 3D particle flow field inside the bulk. Over the programme’s second year, progress has been made in all three areas. The highlight has been the successful acquisition of a set of 3D measurements of particle motions in a dense solid-liquid mixture. These measurements were made in a pilot fluidisation cell apparatus which is now fully operational. The feasibility of the measurement technique based on refractive index matching, laser marking, and stereo imaging has thus been demonstrated for the first time. A second milestone has been the completion of the large-scale double recirculation flume apparatus. Pending the solution of some technical problems, chief among them fatigue failure of the high-speed conveyer belt, the apparatus is now nearly operational. Finally, progress has been made in developing computational tools for the analysis and simulation of solid-liquid flow fields. The results obtained and tasks remaining are detailed below under the following four headings: 1) pilot fluidisation tests; 2) double-recirculation flume apparatus; 3) three dimensional particle tracking; 4) liquid-solid flow simulations. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/9912 | 其他識別: | 912211E002061 | Rights: | 國立臺灣大學水工試驗所 |
顯示於: | 生農、工學院附設水工試驗所 |
檔案 | 描述 | 大小 | 格式 | |
---|---|---|---|---|
912211E002061.pdf | 1.2 MB | Adobe PDF | 檢視/開啟 |
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。