| 非对称火焰三维温度分布测量的重构算法 |
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| 引用本文： | 徐雁,吴占松,李天铎.非对称火焰三维温度分布测量的重构算法[J].清华大学学报(自然科学版),1996(10). |
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| 作者姓名： | 徐雁 吴占松 李天铎 |
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| 作者单位： | 清华大学热能工程系 |
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| 基金项目： | 国家教委博士点基金,国家重点实验室开放基金 |
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| 摘 要： | 为了适应非对称火焰三维温度分布测量的需要，发展了一种三维重构算法。该算法既有别于医学成像和机械探伤等领域常用的变换法，便于在算法中加入火焰的某些先验信息，又不同于通常的有限级数扩展法，具有较快的运算速度，从而可以减少三维重构误差。采用这一算法在保证一定精度的前提下，可通过少投影实现火焰的三维温度分布测量。仿真运算及实验结果均证明此算法是可行的。
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| 关 键 词： | 重构算法 非对称火焰 温度分布 |
Research on algorithm of reconstruction of 3 D temperature distribution in non symmetric luminous flame |
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| Xu Yan,Wu Zhansong,Li Tianduo.Research on algorithm of reconstruction of 3 D temperature distribution in non symmetric luminous flame[J].Journal of Tsinghua University(Science and Technology),1996(10). |
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| Authors: | Xu Yan Wu Zhansong Li Tianduo |
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| Institution: | Xu Yan,Wu Zhansong,Li Tianduo Department of Thermal Engineering,Tsinghua University |
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| Abstract: | To measure non symmetric 3 dimensional temperature distribution of flame, a reconstruction algorithm is developed. It is different both from the transform method commonly used in medical scanning and non destructive testing, and from general finite series expansion method. This algorithm enables us to apply a priori information of flame as constraints to it, and it is faster than the finite series expansion method. With it, the accuracy of reconstruction of 3 D temperature distribution of flame from few projections is acceptable. The results of computer simulations and experiments confirm that this algorithm is applicable. |
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| Keywords: | reconstruction algorithm non symmetric flame temperature distribution |
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