Experimental investigation of the pebble bed structure by using gamma ray tomography

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• 作者：Fadha Al Falahi ; Muthanna Al-Dahhan ; ^{aldahhanm@mst.edu}
• 关键词：N. Experiments
• 刊名：Nuclear Engineering and Design
• 出版年：2016
• 出版时间：15 December 2016
• 年：2016
• 卷：310
• 期：Complete
• 页码：231-246
• 全文大小：4196 K
• 卷排序：310

文摘

The structure of the pebble bed reactor has been studied for the first time in terms of solids and voids. High energy-high resolution gamma ray computed tomography (CT) was used to achieve these findings. Results indicated that the spatial porosity distribution in randomly packed columns is not uniform. The void distribution in randomly packed beds is dependent on the pebbles diameter and their characteristics and the bed diameter. The radial void fraction’s profile exhibited large, dampened oscillations near the wall.