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Modernized Scheme of Thermal Ignition and Flame Stabilization at Flow Supersonic Speeds in Channel

机译:流量超声速度的热点火和火焰稳定的现代化方案

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For providing fuel ignition at the high supersonic flow velocity original device was developed. Main element of this device in the form of wall slotted channel has to provide the high flow temperature in the area of mixture. Numerical simulation has been performed based on solving the full averaged Navier-Stokes equations, supplemented k-ε turbulence model. The experiments were carried out in the hotshot wind tunnel IT-302M at the mode of the attached pipe. The flow parameters at the model entrance were following: M = 2 - 5.8, p_0 = 12 - 390bar, T_0 = 1170 - 2930K at equivalence ratio of hydrogen from 0.6 to 1.1. Self-ignition of the hydrogen in the slotted channel has occurred at total flow temperature of 2250K at the combustor entrance. The combustion process is extended to the entire channel of the combustor. When the facility worked with decreasing parameters of the flow, combustion continued until drop of the static temperature of about 230K at the entrance of the combustor.
机译:为了在高超声波流速下提供燃料点火,开发了原始装置。该器件的主要元件以壁开槽通道的形式必须在混合物面积中提供高流量温度。基于求解全平均Navier-Stokes方程,补充了k-ε湍流模型的数值模拟。在连接管的模式下在Hotshot风隧道IT-302M中进行实验。模型入口处的流量参数如下:m = 2 - 5.8,p_0 = 12 - 390bar,T_0 = 1170-2930K,氢气等当量为0.6至1.1。开槽通道中的氢的自点火在燃烧器入口处的2250K的总流动温度下发生。燃烧过程延伸到燃烧器的整个通道。当设施与流量的参数降低时,燃烧仍在继续,直到燃烧器入口处的静态温度下降约2​​30K。

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