摘要
电容层析成像方法(electrical capacitance tomography,ECT)用于燃烧监测已经被证明是完全可行的,然而,ECT对火焰的介电感应机理以及ECT测量结果与火焰宏观参数之间的关系,研究者们未做探讨。文中在考虑带电粒子运动与电磁场之间耦合作用的基础上,建立等离子体中带电粒子运动方程,推导了与火焰微观特性相关的复等效介电系数表达式。在适当假设的前提下,提出了火焰复等效介电系数的理论模型,并对其进行了实验验证。该文的研究结果可为火焰的ECT监测提供理论参考。
The feasibility of electrical capacitance tomography （ECT） using in combustion monitoring has been validated. However, the dielectric induction of ECT on flame and the relationship between ECT images and flame properties were not studied up to the present. The interaction of electromagnetic waves and electriferous particles was considered and the equation of motion for an average electron in the plasma was established. And tbe effective permittivity of flame was deduced. A theoretical model based on reasonable assumption was developed to predict the permittivity characteristics of flame and it was validated by measurement results. The results provide important theoretical reference for the combustion monitoring using ECT.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2009年第26期56-62,共7页
Proceedings of the CSEE
基金
国家自然科学基金项目(50806005
50736002
60672151)~~
关键词
电容层析成像
火焰介电系数
介电感应
等离子体
electrical capacitance tomography
permittivity of flame
dielectric induction
plasma
