https://scholars.lib.ntu.edu.tw/handle/123456789/64425
標題: | 固化界面失穩及型態發展之非線性解析及可視化研究(1/3) | 作者: | 藍崇文 | 公開日期: | 28-五月-2003 | 出版社: | 臺北市:國立臺灣大學化學工程學系暨研究所 | 摘要: | 合金固化在材料加工處理上扮演重要的角色,所以合金界面現象 研究一直深受國內外學者重視,每年均有大批人力投入研究,並發表 論文,但較少人從事長時間尺度下之研究,本實驗室便自行建構長時 間尺度觀察儀器,並製備極高純度之SCN ,如此便能將雜質效應最 小化以便觀察雙成分合金固液界面對時間之演化現象, 本計劃除了最主要的實驗部分以外,最後還包含了利用相場模式 (phase field model )來進行數值模擬,因為本實驗是在低溫度梯度和 低拉速之下進行的,遠遠超過現在的電腦運算能力所能容忍的範圍。 而本實驗室藉著既有的最先進的適應性網格能力,已經在這方面取得 世界領先的地位,並發表許多有關相場模式模擬的文章,相信日後藉 著物理與數值方法兩大方面來逼近,終究可以解決此一困難問題。 Directional solidification of alloy play an important role during the material manufacture, there are so many people paying much attention to this project and many thesis were presented. But few people research the long time scale experiment. So we build the machine for long time scale observation, and we get the super pure SCN by ourself. We can see the evolution of the solid -melt interface formed during the thin film directional solidification. Not only experimental procedures but also phase -field model numerical simulations are included in this project. Because of Low temperature gradient and low pull speed, these calculations are much difficult in terms of the perso nal computer ability nowadays. However, based on the AMR (Adaptive Mesh Refinement) developed by our lab. , there are have many new publications and we have become one of the best groups in the phase-field model simulation field. It is believed that we will overcome by both physical and numerical approaching. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/9337 | 其他識別: | 912214E002027 | Rights: | 國立臺灣大學化學工程學系暨研究所 |
顯示於: | 化學工程學系 |
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912214E002027.pdf | 1.48 MB | Adobe PDF | 檢視/開啟 |
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