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| 扇束辐射层析技术重建三维流场 | |
| 引用本文： | 万雄,陶建文,于盛林,高益庆.扇束辐射层析技术重建三维流场[J].光子学报,2004,33(2):252-256. |
| 作者姓名： | 万雄 陶建文 于盛林 高益庆 |
| 作者单位： | 1. 南昌航空工业学院测控系,南昌,330034;南京航空航天大学自动化学院,南京,210016 2. 江西信息应用职业技术学院,南昌,330043 3. 南京航空航天大学自动化学院,南京,210016 4. 南昌航空工业学院测控系,南昌,330034 |
| 基金项目： | 中国航空科学基金 (0 0I5 6 0 0 4 )，江西省测控工程研究中心基金 (KG2 0 0 2 0 4 0 0 2 )资助项目 |
| 摘 要： | 运用扇束扫描数据采集系统获得三维流场辐射谱强度数据,并采用重排算法及MART技术相结合作为扇形束辐射层析重建算法.通过数值模拟进行了算法检验并确定了系统旋转及扫描参数.最后,根据该扇束辐射层析技术进行了热等离子体三维流场重建实验.结果表明：用该方法重建的温度场与文献所得结果相近(重建温度范围都在4000～14000 K之间),重建三维等离子场电子(离子)数密度场范围在10×1015～70×1015个/cm3之间. |
| 关 键 词： | 扇形束 辐射层析 热等离子体 三维重建 |
| 收稿时间： | 2003-07-21 |
| 修稿时间： | 2003年7月21日 |
3-D Stream Fields Reconstruction with Fan-beam Emission Spectral Tomography Technique |
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.3-D Stream Fields Reconstruction with Fan-beam Emission Spectral Tomography Technique[J].Acta Photonica Sinica,2004,33(2):252-256. |
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| Authors: | |
| Institution: | (1 Dept. of Testing and Control Engineering, Nanchang Institute of Aeronautical Technology, Nanchang 330034,P.R.China) (2 Jiangxi Vocational Institute of Applications of Information, Nanchang 330043, P.R.China) (3 Institute of Automation of Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R.China) |
| Abstract: | The spectral intensity data were achieved with a fan-beam scanning system combined with a novel computed tomography algorithm,based on the re-arrange algorithm and the Multiplicative Algebraic Reconstruction Technique (MART). The rotating and scanning parameters were decided and the algorithm was investigated through numerical simulation of computer. At last, hot plasma stream fields were reconstructed with this fan-beam emission spectral tomography (EST) technique. The results show that the temperature of the Argon-arc plasma field is from 4000 K to 14000 K, which is similar with the results from the methods introduced in the literatures 3-4. Furthermore, the electron (ion) density field was also reconstructed, whose value is between 10×1015/cm3 and 70×1015/cm3. |
| Keywords: | Fan-beam Emission spectral tomograpy Hot plasma 3-D reconstruction |
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