We report a theoretical analysis of the propagation and structure of the planar adiabatic/radiative flame in supercritical fluids, employing the Van der Waals and the Redlich-Kwong equations of state to describe the fluid properties. It is demonstrated that the effective molecular volume and attractive force terms in these non-ideal equations of state show opposite effects on the density modification, especially in the upstream unburned region. Furthermore, the non-ideal effect is found to strongly couple with radiative emission and reabsorption, whose respective weakening and strengthening effect can substantially affect the state of radiation-induced quenching. The theory is useful for the description of high-pressure flames as both the non-ideal state and radiation become more pronounced under such conditions.

我们报告了超临界流体中平面绝热/辐射火焰的传播和结构的理论分析，使用范德瓦尔斯和 Redlich-Kwong 状态方程来描述流体特性。结果表明，这些非理想状态方程中的有效分子体积和吸引力项对密度修改显示出相反的影响，尤其是在上游未燃烧区域。此外，发现非理想效应与辐射发射和重吸收强烈耦合，其各自的弱化和强化效应可以显着影响辐射诱导的猝灭状态。该理论可用于描述高压火焰，因为在这种条件下非理想状态和辐射都变得更加明显。