Side-wall quenching (SWQ) is one of the generic configurations for flame-wall interaction and has been widely investigated through simulations using detailed and reduced chemical kinetics. In all previous related studies using manifold-based reduced kinetic models, the reduced model equations are solved in thermokinetic coordinates. This study, by contrast, will for the first time conduct SWQ simulations based on reduced model equations in generalised coordinates. The implementation has been validated by comparison to both simulation results using detailed kinetics and experimental data. Comparing the results of computations solving reduced model equations in generalised coordinates to those in thermokinetic coordinates, it is found that there are only slight differences when the manifold is perfectly invariant, while large discrepancies appear if the manifold is not exactly invariant. Under the latter condition, only reduced model equations in generalised coordinates yield correct results. Within the combined framework of reduced model equations in generalised coordinates and the so-called reaction–diffusion manifold for tabulation, the sensitivity with respect to the gradient estimation is investigated to find out what degree of simplification is reasonable for SWQ simulations.

侧壁淬火 (SWQ) 是火焰-壁相互作用的通用配置之一，并已通过使用详细和简化的化学动力学的模拟得到广泛研究。在之前使用基于流形的简化动力学模型的所有相关研究中，简化模型方程在热动力学坐标中求解。相比之下，这项研究将首次基于广义坐标中的简化模型方程进行 SWQ 模拟。通过与使用详细动力学和实验数据的模拟结果进行比较，该实施已得到验证。比较广义坐标中简化模型方程的计算结果与热动力学坐标中的计算结果，发现当流形完全不变时，只有微小的差异，如果流形不是完全不变的，则会出现大的差异。在后一种情况下，只有广义坐标中的简化模型方程才能产生正确的结果。在广义坐标中的简化模型方程和用于制表的所谓反应-扩散流形的组合框架内，研究了梯度估计的敏感性，以确定 SWQ 模拟的合理简化程度。