In this paper, a kinetic-diffusion surface combustion model is examined. The model is modified such that two effects of turbulence are included: 1) enhancement of the mass transfer due to relative velocity between particles and fluid and 2) reduction of the mass transfer due to turbulence-induced particle clustering. Details of the implementation are discussed and the influence of parameters such as air-fuel ratio, particle number density, particle diameter, turbulence intensity and characteristic length scales are studied theoretically. A simplified numerical model of a combustion chamber is created to explore the effects of the combustion model predictions. Finally, the model is incorporated into simulations of an industrial-scale boiler to investigate the effect of turbulence on the net surface reaction rate in a real system. The study shows that although on average this effect is rather minor, there exist regions in which the carbon conversion rate is either decreased or increased by turbulence.

在本文中，研究了动力学扩散表面燃烧模型。对该模型进行了修改，以便包括湍流的两个影响：1）由于颗粒和流体之间的相对速度而引起的传质的增强，以及2）由于湍流引起的粒子聚集而引起的质量传递的减小。讨论了实现的细节，并从理论上研究了空燃比，颗粒数密度，颗粒直径，湍流强度和特征长度尺度等参数的影响。创建了燃烧室的简化数值模型，以探索燃烧模型预测的效果。最后，将该模型并入工业规模锅炉的仿真中，以研究湍流对实际系统中净表面反应速率的影响。