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在建立湍流燃烧模型时需要处理燃烧速率,途径之一是研究构成湍流火焰区的流体夹层块;分析湍流、分子输运和化学动力学诸因素的影响;并通过对流体块分布的设计分析确定整个湍流火焰的状态.本文着眼于在大尺度湍流中,由燃料和氧化剂构成的流体夹层块用解析和数值方法研究拉伸速率、输运性质和化学动力学因素对湍流扩散火焰燃烧速率的影响,以求对湍流燃烧机理认识的深化。
In the establishment of turbulent combustion model, the combustion rate needs to be dealt with. One way is to study the fluid sandwich blocks that constitute the turbulent flame zone. The effects of turbulence, molecular transport and chemical kinetics are analyzed. By the design analysis of the fluid block distribution, The state of the entire turbulent flame.This paper focuses on the analysis of the fluid sandwich block consisting of fuel and oxidant in large-scale turbulence using analytical and numerical methods to study the influence of tensile rate, transport properties and chemical kinetics on the combustion rate of turbulent diffusion flame , In order to deepen the understanding of turbulent combustion mechanism.