Effective Solution Method of Chemical Reaction Kinetics With Diffuse
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摘要: 对扩散、化学反应或瞬态温度场问题,给出了具有4阶精度、自起步的隐式时间积分算法.算例显示,其精度和稳定性都好于四阶Runge-Kutta法,并且保留了原系数矩阵的稀疏存储方式和稀疏矩阵的运算规则,使紧缩存储技术和减少计算时间有效的结合.以旋转填充床内的竞争串联反应为算例,表明该算法是有效的.Abstract: The time integration method with four-order accuracy,self-starting and implicit for the diffuse chemical reaction kinetics equation or the transient instantaneous temperature filed equation was presented.The examples show that both accuracy and stability are better than Runge-Kutta method with four-order.The coefficients of the equation are stored with sparse matrix pattern,so an algorithm is presented which combines a compact storage scheme with reduced computation cost.The computation of the competitive and consecutitive reaction in the rotating packed bed is taken as examples which shows that the method is effective.
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Key words:
- step-by-step integration /
- diffuse /
- chemical reaction kinetics /
- rotating packed bed /
- micro-mixing
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