Preliminary study on ECT imaging of flames in porous media
Preliminary study on ECT imaging of flames in porous media
复制标题
多孔介质火焰ECT成像初步研究
DOI：
10.1088/0957-0233/19/9/094017
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发表时间：
2008-09-01
影响因子：
2.4
通讯作者：
Lei, J.
中科院分区：
文献类型：
--
作者：
Liu, S.;Chen, Q.;Lei, J.
这项初步研究首次调查了多孔介质中火焰断层扫描监测的可行性，其中多孔介质内火焰的横截面轮廓通过电容断层扫描（ECT）进行成像。建立了火焰电离和相对介电常数之间的关系，作为火焰 ECT 成像的基础。讨论了图像重建算法，选择在线迭代方法OIOR进行图像重建。进行了实验测量并重建了火焰图像。多孔块中火焰的形状、大小和运动都得到了清晰的监控。图像也清楚地对应于燃烧强度的变化。本研究证明了 ECT 监测多孔介质中火焰的可行性。
This preliminary study for the first time investigated the feasibility of tomographic monitoring of flames in porous media, in which the cross-sectional profiles of flames inside a porous medium were imaged by electrical capacitance tomography (ECT). The relationship between the flame ionization and relative permittivity was established as the basis for ECT imaging of flames. Image reconstruction algorithms were discussed and an online iterative method OIOR was selected for image reconstruction. Experimental measurements were carried out and images of the flames were reconstructed. The shape, size and motion of the flames in a porous block were clearly monitored. Also the images correspond clearly to the variations of the combustion intensity. The feasibility of ECT monitoring of flames in porous media is proven by this study.