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为研究内燃波转子内非定常流动和燃烧特性,在分析内燃波转子的结构和工作特点的基础上,建立了内燃波转子简化二维模型。采用数值模拟的方法,研究内燃波转子内非定常流动过程中预压缩作用对混气总压和温度的影响,冷态流动过程中混气的分布以及混气与新鲜空气接触面形状的变化。采用热射流点燃内燃波转子内形成的可燃混气,研究转子通道内燃烧特性。研究结果表明:通过内燃波转子预压缩,通道内气体的总压提高了32%,总温提高了10.4%;混气与空气接触面的扭曲变形程度受到内燃波转子作用时序和通道内的轴向速度分布影响;热射流成功点燃通道内可燃混气,实现了转子通道内可燃混气的爆震燃烧,爆震波峰值压力约2MPa,爆震波传播速度在2 600～2 800m/s范围内。
In order to study the unsteady flow and combustion characteristics of the internal combustion rotor, a simplified two-dimensional model of the internal combustion rotor is established based on the analysis of the structure and operating characteristics of the internal combustion rotor. The effects of pre-compression on the total pressure and temperature of the mixed gas, the distribution of the mixed gas in the cold flow, and the change of the shape of the interface between the mixed gas and the fresh air were studied by means of numerical simulation. The combustible gas mixture formed in the internal combustion rotor is ignited by the thermal jet, and the combustion characteristics in the rotor channel are studied. The results show that the total pressure of the gas in the channel is increased by 32% and the total temperature is increased by 10.4% through the pre-compression of the internal combustion rotor. The degree of distortion of the interface between the air and the air is affected by the timing of the action of the internal combustion rotor and the axis The velocity of detonation wave is about 2MPa. The propagation velocity of detonation wave is in the range of 2 600 ~ 2 800m / s.