HRD-76燃料的简化反应机理构建与验证

Construction and Verification of Skeleton Mechanism of Farnesane and HRD-76 Fuel

为了开发适用于计算流体动力学(CFD)模拟的紧凑和高精度的反应机理,提出了一种新的简化机理构建方法为HRD-76模型燃料构建了含89种组分和471个基元反应的简化反应机理,并验证了各个基础组分和燃料的着火延迟、物质组分浓度、层流火焰速度等基础燃烧特性.并将该机理耦合到三维CFD喷雾模型中,来模拟定容喷雾燃烧室(CVSCC)中的喷雾燃烧过程.结果表明,喷雾燃烧特性模拟值能与实验值较好地吻合,证明了所构建机理在燃烧CFD模拟中的有效性.本文提出的新方法为高碳燃料的机理构建提供了新思路.

In order to develop a compact and high precision reaction mechanism suitable for computational fluid dynamics simulation,a new simplified mechanism construction method was proposed to construct a simplified reaction mechanism containing 89 components and 471 elementary reactions for HRD-76 fuel.The basic combus-tion characteristics such as ignition delay,component concentration and laminar flame velocity of each basic com-ponent and fuel were verified.The mechanism is coupled to a three-dimensional CFD spray model to simulate the spray combustion process in a constant volume spray combustor.The results show that the simulation values of spray combustion characteristics are in good agreement with the experimental ones,which proves the effectiveness of the proposed mechanism in the combustion CFD simulation.The method proposed in this paper provides a new idea for the mechanism construction of high-carbon fuel.