Oscillating jet flames in a coflow mimic certain features of turbulent flows in a simplified and controllable way. Our study aims to identify the potential of the HMOM soot model, which is validated in steady laboratory flames to be applied in practical, mostly turbulent flames. The model is found to accurately predict all the measurement parameters in a steady laminar sooting jet flame of ethylene/nitrogen mixture. When applied to an oscillating flame with the same fuel mixture, it was found that, while velocity, temperature, and OH fields are well predicted, the peak soot volume fraction is over predicted and occurs away from the experimentally measured location. The potential for soot model improvement is analysed by correlating the transient gas-phase species, polycyclic aromatic hydrocarbon, and soot formation or destruction behaviour. A need for improved soot nucleation, condensation, and oxidation formulations is identified. It is further found that the soot number density distribution in mixture fraction space is comparable to the transitional turbulent flame regime dominated by Kelvin-Helmholtz rollers.

同流中振荡的喷射火焰以简化且可控制的方式模仿了湍流的某些特征。我们的研究旨在确定HMOM烟灰模型的潜力，该模型已在稳定的实验室火焰中得到验证，可用于实际的湍流火焰中。发现该模型可以准确预测乙烯/氮混合物的稳定层状烟ot喷射火焰中的所有测量参数。当将其与具有相同燃料混合物的振荡火焰一起使用时，发现虽然可以很好地预测速度，温度和OH场，但峰值碳烟量分数却被过度预测，并且远离实验测量位置。通过关联瞬态气相物质，多环芳烃和烟灰形成或破坏行为，分析了烟灰模型改进的潜力。已经确定需要改进的烟灰成核，冷凝和氧化配方。进一步发现，混合物分数空间中的烟灰数密度分布与由开尔文-亥姆霍兹辊支配的过渡湍流火焰状态相当。