Qualitative Modelling and Manipulated Factor Search in Nonlinear Reaction-Separation Systems

本研究引入时间Petri网，以实现并发交互过程的非线性波的剪切流与扩散放热反应和非线性血清蛋白质的液相色谱分离的系统分析。通过对上述过程的建模与仿真，得到以下结果.实验研究了具有扩散放热中和作用的液体剪切流中的粘性非线性波，并基于反应物、热量和动量的量子化，采用赋时Petri网对振荡机理进行了建模。粘度对温度的依赖性对模型非常重要.在液相色谱分离血清蛋白过程中，实验研究了过载和进样浓度对分离过程的非线性影响，并用赋时Petri网描述分离过程的非线性操作.基于上述模型的仿真结果清楚地显示了状态变量与操纵因素之间的非线性关系，表明液体粘度是上述过程中最重要的操纵因素。

This study introduced a timed Petri net to realize system analysis of concurrent interactive processes in nonlinear waves of a shear flow with a diffusive exothermic reaction and nonlinear serum protein fractionation using liquid chromatography. Through modelling and simulation of the above processes, the following results were obtained.1. Viscous nonlinear waves in a liquid shear flow with a diffusive exothermic neutralization were experimentally investigated and the mechanism of oscillation was modelled based on the quantization of reactants, heat and momentum using a timed Petri net. The dependence of viscosity on temperature was very important for the model.2. In serum protein fractionation using liquid chromatography, the nonlinear effects of the overload and the concentration of injection were experimentally investigated and the nonlinear operation of fractionation could be represented using a timed Petri net.3. Simulation based on the above models clearly showed the nonlinear relation between state variables and manipulated factors.The above results made clear that the viscosity of liquid was the most important as a manipulated factor in the above processes.