基于火焰空间与玻璃液热耦合的玻璃熔窑数值模拟

采用数值模拟方法,对火焰空间和玻璃池窑之间的热耦合模拟可行性进行研究,以玻璃液表面中轴线温度偏差作为比较标准,判断热耦合过程是否收敛。研究结果表明：在六至七次循环迭代后计算结果可收敛,而且热耦合模拟的收敛速度与给定的初始条件有关。建立燃天然气富氧助燃玻璃熔窑模型,与火焰空间、玻璃池窑单独模拟相比,热耦合模拟的结果能够更准确地反映喷枪燃料分布等条件对玻璃液流动情况及温度分布的影响,更为细致全面地模拟出玻璃液表面热传输的不均匀性。

Computational Study of Glass Furnace Based on Thermal Coupling between Combustion Space and Liquid Glass Pool

Computational study of thermal coupling between combustion space and liquid glass pool was performed by using the temperature deviation on the midline of fluid glass surface as the convergence criterion.Results of the study show that the convergence has been achieved after six or seven iterations,and the convergence speed is influenced by the initial conditions.Computational model of oxygen-enriched combustion furnace was established to compare the simulation results generated by separated method and thermal coupling method.Results of the comparison show that the latter one is more precise in predicting fluid condition and thermal condition,and is better at capturing the heterogeneity of heat transfer on the glass surface.