An Improved Soot Formation Model for 3D Diesel Engine Simulations
An Improved Soot Formation Model for 3D Diesel Engine Simulations
复制标题
用于 3D 柴油发动机模拟的改进烟灰形成模型
DOI：
10.1115/1.2718234
复制
发表时间：
2005
影响因子：
1.5
通讯作者：
G. Smallwood
中科院分区：
文献类型：
--
作者：
J. Boulanger;Fengshan Liu;W. Neill;G. Smallwood
在这项研究中，一个唯象的三方程碳烟模型的基础上，可接受的计算需求和定性描述的主要特征的碳烟形成的物理因素的考虑，柴油机燃烧碳烟的形成建模。该模型的基础上开发的Tesner等人。该模型被实施到商业STAR-CD CFD软件包，并证明了在单缸研究版本的卡特彼勒3400系列柴油发动机与废气再循环的碳烟形成的建模。数值结果表明，新的烟尘配方克服了现有烟尘模型的缺点，并表现出强大的和一致的行为与实验观察。与现有的碳烟模型相比，新的碳烟模型的一些显著特点包括：在低温下不形成碳烟，对不同燃料的模型参数调整最小，并且不需要规定碳烟颗粒的尺寸。Copyright © 2005 by National Research理事会Canada
In this study, a phenomenological three-equation soot model was developed for modelling soot formation in diesel engine combustion based on considerations of acceptable computational demand and a qualitative description of the main features of the physics of soot formation. The model was developed based on that of Tesner et al. The model was implemented into the commercial STAR-CD CFD package and was demonstrated in the modelling of soot formation in a single-cylinder research version of Caterpillar 3400 series diesel engine with exhaust gas recirculation. Numerical results show that the new soot formulation overcomes most of the drawbacks in the existing soot models and demonstrates a robust and consistent behaviour with experimental observation. Compared to the existing soot models for engine combustion modelling, some distinct features of the new soot model include: no soot is formed at low temperature, minimal model parameter adjustment for application to different fuels, and there is no need to prescribe the soot particle size.Copyright © 2005 by National Research Council Canada