气化炉自动建模系统研究

Study of Gasifier Auto-Modeling System

为了减轻建模人员在建模公式推导、逻辑关系推导和编制仿真程序的工作量 ,设计了气化炉自动建模系统。该系统在反应物为多种气体、多种固体 (均考虑为单筛分 )的条件下 ,按照小室模型的框架自动列写相应各个物质的质量、能量平衡方程 ,并自动生成相应的计算机程序 ,方便仿真计算。由于该系统避开了工程中常用的纯数值建模的思路 ,采用了新的数学工具—以符号运算为特长的计算机代数系统为计算平台 ,才使得该系统具有强大的逻辑关系推导能力。该系统在某气化炉的建模过程中得到了验证和示范 ,事实表明 :该系统大大减少了气化炉的建模工作量 ,特别是减少由于化学反应假定的不同带来的建模复杂性 。

In order to reduce the modeling work of model deduction, logic relationship treatment and writing simulation programs in gasifer modeling procedure, a gasifier auto modeling system is established. Such a system can deduct mass and energy balance equations based on cell model modeling method for multi gas and solid substances, and generate corresponding computer subroutine program. In contrast to pure numerical modeling method, computer algebra system, which is characterized as symbolic calculation, is used as basis. Demonstration and validation work showed the auto modeling system could substitute human's work to simplify gasifier modeling procedure, especially to reduced the modeling complexity brought by the variation of chemical reaction assumption. Moreover, the gasifier auto modeling system is a new sample of how to use computer to substitute human's modeling work. Figs 4, tables 2 and refs 7.