| 采用PTV技术研究循环流化床内气固两相流动 |
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| 引用本文： | 由长福,祁海鹰,徐旭常,山本富士夫.采用PTV技术研究循环流化床内气固两相流动[J].应用力学学报,2004,21(4):1-5. |
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| 作者姓名： | 由长福 祁海鹰 徐旭常 山本富士夫 |
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| 作者单位： | 1. 清华大学,北京,100084
2. 日本福井大学 |
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| 基金项目： | 国家重点基础研究专项经费资助 (973项目 ) (No .G19990 2 2 2 ) |
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| 摘 要： | 采用PTV技术对循环流化床顶部颗粒稀疏流动区域进行了测量，其中采用先进的高速摄像技术获取流动的连续图像，并采用目前有望在气固两相流动测量中发挥较大作用的四种PTV算法：BICC法、VGT法、SPRING法和4-FRAME法，对所获取的图像进行颗粒配对处理，从而得到流场中运动颗粒的速度信息。所得到的结论为：本文所采用的PTV算法在图像处理中都产生少量的伪矢量，通过采取简单的伪矢量识别算法就可以剔除大部分伪矢量；本文实验条件下，测得循环流化床顶部区域内颗粒运动速度差别较小。本文工作为进一步详细实验测量研究奠定了理论与技术基础。
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| 关 键 词： | PTV 气固两相流动 实验测量 循环流化床 |
| 文章编号： | 1000-4939(2004)04-0001-05 |
| 修稿时间： | 2003年2月23日 |
Investigation to Gas-Particle Two-Phase Flow in CFB using PTV Technology |
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| You Changfu,Qi Haiying,Xu Xuchang,Fujio Yamamoto.Investigation to Gas-Particle Two-Phase Flow in CFB using PTV Technology[J].Chinese Journal of Applied Mechanics,2004,21(4):1-5. |
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| Authors: | You Changfu Qi Haiying Xu Xuchang Fujio Yamamoto |
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| Institution: | You Changfu 1 Qi Haiying 1 Xu Xuchang 1 Fujio Yamamoto 2 |
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| Abstract: | The measurement of gas-particle two-phase flow in the top region of CFB was carried out with PTV technology. The sequent images of the flow field were acquired with an advanced high-speed camera. Four PTV algorithms were used in the measurement of gas-particle two-phase flow (BICC, VGT, SPRING and 4-FRAME) to process the images and get the flow information. It is found that only a little number of spurious velocity vectors exist in the results, which can be remored easily with a simple algorithm. Under the present conditions, the differences of the particles' velocity in the top region of CFB are slight. |
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| Keywords: | PTV gas-particle two-phase flow experimental measurement CFB |
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