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应用一维湍流模型(ODT)来研究湍流射流氢气-空气扩散火焰,研究过程中采用详细化学反应机理和多分量输运属性.对于火焰长度、主要燃烧产物及温度的预测较好地符合了实验结果.ODT模拟结果产生了较高的近场扰动.提出了一种旨在通过修改涡事件选择过程从而提高ODT模型精度的新观点.在模拟中检验了微分扩散效应,结果显示当前火焰中存在着显著不同的扩散效应.
One-dimensional turbulence model (ODT) was used to study the turbulent jet hydrogen-air diffusion flame, and the detailed chemical reaction mechanism and multi-component transport properties were used in the study. The prediction of flame length, main combustion products and temperature was in good agreement with the experiment As a result, the results of the ODT simulation result in higher near-field perturbations, and a new viewpoint is proposed to improve the accuracy of the ODT model by modifying the vortex event selection process. The differential diffusion effect is examined in the simulation and the results show that the current flame Significantly different diffusion effects.