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	Determination of the optimal axial length of the electrode in an electrical capacitance tomography sensor
	Lihui Peng ; Changhua Mou ; Yao, D. ; Baofen Zhang ; Deyun Xiao
	2010-05-06 ; 2010-05-06
关键词	Practical Theoretical or Mathematical Experimental/ electric impedance imaging electrodes finite element analysis partial differential equations sensitivity/ optimal axial length electrical capacitance tomography sensor process tomography 3D effect finite element method partial differential equation sensitivity distributions 2D modeling measurement electrode guard electrode normalized capacitance two phase flow image reconstruction/ B7310J Impedance and admittance measurement B0290T Finite element analysis B0290P Differential equations (numerical analysis)
中文摘要	Electrical capacitance tomography (ECT) is one of the most successful process tomography techniques, which has been developed for more than a decade. Thus far, most of the research on ECT has been based on two-dimensional modeling, which simplifies the ECT sensor structure as two dimensional. However, certain key issues such as the three-dimensional effect of the ECT sensor are not considered at all. In this paper, the finite element method is used to solve the partial differential equation governing the ECT sensing zone, which is actually three dimensional. The sensitivity distributions between different electrode pairs are calculated and compared with those based on the two-dimensional modeling. The impacts of the length of both the measurement electrode and the guard electrode on the sensitivity distribution are investigated. The effect of the length of the measurement electrode on the normalized capacitance is also discussed. According to the numerical results presented in this paper, it is suggested that the optimal length of the measurement electrode for electrical capacitance tomography is the same as the width or diameter of the sensor. [All rights reserved Elsevier].
语种	英语 ; 英语
出版者	Elsevier ; UK
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/9611]
专题	清华大学
推荐引用方式 GB/T 7714	Lihui Peng,Changhua Mou,Yao, D.,et al. Determination of the optimal axial length of the electrode in an electrical capacitance tomography sensor[J],2010, 2010.
APA	Lihui Peng,Changhua Mou,Yao, D.,Baofen Zhang,&Deyun Xiao.(2010).Determination of the optimal axial length of the electrode in an electrical capacitance tomography sensor..
MLA	Lihui Peng,et al."Determination of the optimal axial length of the electrode in an electrical capacitance tomography sensor".(2010).

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