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	利用半迭代重整ECT图像在气固两相流测量上的应用
	王翠苹 ; 王玉东 ; 李定凯 ; 吕子安 ; WANG Cui-ping ; WANG Yu-dong ; LI Ding-kai ; LV Zi-an
	2010-06-08 ; 2010-06-08
关键词	ECT Landweber半迭代法 图像重整 空间分辨率 气固两相流 ECT landwerber semi - iterative method image reconstruction space resolution gas -solid two phase flow TH814
其他题名	A polication of electrical capacitance tomography image reconstruction with semi - itrative method on gas - solid two phase measurement
中文摘要	可视化测量工具ECT通过迭代法求解逆问题进行图像重整,但是目前文献中采用的迭代算法,仍不能完全解决空间分辨率低的问题,不能正确得出复杂分布和稀相两相流的图像。本文首次提出并采用Landweber半迭代算法用于ECT图像重整,通过对静态和动态测量, 对浓相和循环悬浮床内稀相的测量,将重整出的图像与其他算法对比,显示了半迭代法在空间分辨率方面的优越性。Landweber半迭代法为ECT进一步实际应用到气固两相流测量提供了新的保证。; Electrical capacitance tomography(ECT)has been studied for multi - phase flow' s measurement for two decades. Now it can realize online image of flow by LBP( linear back projection method) ,and reconstructijmages by iterative methods to got accurate information of flow. But majority of iterative methods reported and applied can not solve the of, problem lower space resolution' s can not recoresent the dilute flow accurately which limit ECT' s widely practical application. This paper introduces a new iterative method based on Landweber iteraticealgorihm, and it iterates by utilizing the previous two steps iteration information, called Landwebersemi - iterative method. After measured static gas - solid distributions and denser gas - solidtwo phase flow respectively, comparison of semi - iterative method to with other four normal methods reconstructed images shows the distinguished characteristic that-Landweber semi - iterative method is superior to other methods on the center space resolution and on the covergence solutien between gas - solid boundary. Ting on circulating suspension bed shows only semi - iterative method makes ECT possible to be used on dilute gas - solid two phase measurement among the reconstruction image methods.; 国家重点基础研究发展规划资助项目:G19990222085
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/50354]
专题	清华大学
推荐引用方式 GB/T 7714	王翠苹,王玉东,李定凯,等. 利用半迭代重整ECT图像在气固两相流测量上的应用[J],2010, 2010.
APA	王翠苹.,王玉东.,李定凯.,吕子安.,WANG Cui-ping.,...&LV Zi-an.(2010).利用半迭代重整ECT图像在气固两相流测量上的应用..
MLA	王翠苹,et al."利用半迭代重整ECT图像在气固两相流测量上的应用".(2010).

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