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麻省理工学院的Green教授提出了自适应化学理论(AdapChem)的概念。它采用相容分割法将守恒方程划分为化学方程和流动方程两个有机的部分。根据反应条件的不同,这种方法分别使用多个简化化学反应模型,而非复杂的详细基元反应机理进行区域内的数值模拟。它提供了在保证化学精度条件下,避免效率浪费的一条有效途径。针对CH4/空气预混火焰,应用自适应化学理论对其燃烧行为进行了合理的重现,并对几种重要的非主量成分进行了预测,得到了较为理想的模拟结果。
Green, from MIT, put forward the concept of AdapChem. It uses the compatible partition method to divide the conservation equation into two organic parts, the chemical equation and the flow equation. Depending on the reaction conditions, this method uses multiple simplified chemical reaction models rather than complex detailed elementary reaction mechanisms to numerically simulate the region. It provides an efficient way to avoid wastage of efficiency while maintaining chemical accuracy. Aimed at the CH4 / air premixed flame, the combustion behavior was reasonably reproduced by using adaptive chemistry theory. Several important non-principal components were predicted and the ideal simulation results were obtained.