【摘要】 本文在FlameMaster程序基础上，发展了跨/超临界计算函数包，实现了跨/超临界条件下火焰面方程的求解。首先，构建了跨/超临界燃烧模型，通过立方型真实流体状态方程以解释跨临界流体在“伪沸腾”区域所表现出的偏离理想气体的热力学行为，并对热力学性质与输运性质等参数进行了真实流体效应修正。然后将上述模型植入FlameMaster程序并对相关的数值方法进行了调整以保证求解器稳定收敛。最后，通过典型工况算例，对修改后的FlameMaster程序进行了验证。在此基础上以跨/超临界液氧/气氢火焰为例，研究了模型实现过程中的一些重要细节和结果，包括采用不同真实流体状态方程得到结果的差异、真实流体模型与理想气体模型的偏离以及网格算法因素对计算结果的影响，并进一步利用相图方法研究了不同条件参数对火焰结构的影响。更多还原

【Abstract】 In this paper, based on the FlameMaster program, a trans/supercritical calculation-package is developed to solve the steady-flamelet equation under trans/supercritical conditions.Firstly, a trans/supercritical combustion model is constructed to explain the thermodynamic-of the transcritical fluid deviating from the ideal gas in the “pseudo-boiling” region through the cubic real fluid state equation, and the parameters such as thermodynamic properties and transport properties are modified by the real fluid effect. Then, the above model is implanted into-and the relevant numerical methods are adjusted to ensure the stable convergence of the solver.Finally, the modified FlameMaster program was verified by a typical working condition example.On this basis, taking the trans/supercritical LOX/GH2 flame as an example, some important details and results in the process of model implementation are studied, including the difference between the results obtained by using different real fluid state equations, the deviation between the real fluid model and the ideal gas model, and the influence of grid algorithm factors on the calculation results,and the influence of different condition parameters on the flame structure is further studied by using the phase diagram method.更多还原