工业技术学院公用锅炉的数学建模

P. Coelho, J. Azevedo, L. M. Coelho
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引用次数: 0

摘要

电站锅炉的数学建模是一个困难的问题,因为它涉及的物理现象非常多,而且不同现象之间存在相互作用。然而,可靠的模型非常有用,因为它们可以用于设计新设备,并优化和改造运行中的单元。本文报告了里斯本高级tsamicnico研究所(IST)开展的工作。本文只讨论了基于综合模型的工作,即考虑了发生在燃烧室中的所有相关物理现象的模型。本文简要概述了所采用的模型。然后,给出了四个应用实例,其中两个应用于燃煤锅炉,研究了低NOx燃烧器和煤对煤再燃烧的影响,另外两个应用于燃油锅炉,报道了对流室的并行化和模拟。
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The Mathematical Modeling of Utility Boilers at IST
The mathematical modeling of utility boilers is a difficult problem due to the multiplicity of physical phenomena involved and to the interaction between different phenomena. However, reliable models are extremely useful since they can be used to design new equipment, and to optimize and retrofit units in operation. In this paper a survey of the work carried out at Institute superior Técnico (IST) in Lisbon is reported. Only the work based on comprehensive models, i.e., those accounting for all the relevant physical phenomena taking place in the combustion chamber is addressed. The models employed are briefly outlined. Then, four examples of application are given, two of them for coal-fired boilers where the effect of low NOx burners and coal over coal reburning is investigated, and the other two for oil-fired boilers where parallelization of the code and simulation of the convection chamber are reported.
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