Fluent高温含粒子自由流辐射传输特性模拟
时间:2017-06-06 21:47 来源:毕业论文 作者:毕业论文 点击:次
| 摘要在自然界及工业生产中，很多物质及产品呈粒子状态。粒子的吸收、发射及散射在许多工程及环境系统内扮演着重要的角色。由多个粒子组成的弥散系称含粒子弥散系，简称粒子系或弥散系。高温含粒子自由流辐射特性在火焰温度测量、燃烧诊断、目标探测等领域有重要的研究意义和应用背景。论文中首先对单个粒子辐射过程进行计算分析，分析了粒子粒径、粒子运行速度及黑度等因素对于粒子辐射特性的影响，进而得出对于高温粒子流辐射特性产生影响的因素，并且利用Fluent软件建立模型，对高温粒子流辐射特性进行模拟，分析各种因素对于高温粒子流辐射特性的影响。 关键词 高温粒子流 辐射特性 辐射模型 辐射换热毕业设计说明书（论文）外文摘要9738 Title Simulation of Radiation Characteristics of High Temperature Free-Stream Flow Including Particles Abstract In nature and industrial production,many substances and products were particles.The absorption,emission and scattering of the particles plays an important role in many engineering and environmental systems.The diffusion coefficient by the more than one particle is called the diffusion coefficient containing the particle,referred to as a particle system or the diffusion coefficient.The radiation characteristics of the high temperature free-stream flow including particles has important research significance and application background in the measurement of flame temperature,combustion diagnostics,target detection and other areas.Firstly conducting the calculation and analysis of a single particle radiation process,this article analyze the effects of the factors as particle size,particle speed an the black for the characteristics of particle radiation.And then it come to the factors that affect the radiation characteristics of high-temperature stream of particles. Then building a model by Fluent software,it simulates the radiation characteristics of the high-temperature stream of particles,and analyzes a variety of factors that affect the radiation characteristics of high-temperature particle flow. Keyword high-temperature particle flow radiation characteristics radiation model radiation heat transfer 目 录 1 引言 I 1.1 研究背景 1 1.2 国内外研究现状及分析 1 1.3 粒子辐射问题的分类 7 1.4 本课题要做的工作 8 2 单个粒子辐射传输特性计算及分析 8 2.1 单个粒子辐射物理模型 8 2.2 单个粒子辐射数学模型 9 2.3 单个粒子辐射传输过程的影响因素 10 2.3.1 粒径的影响 10 2.3.2 粒子运行速度的影响 15 2.3.3 黑度的影响 16 2.4 小结 17 3 高温粒子流辐射特性分析及Fluent模拟仿真 17 3.1高温粒子流模型 17 3.2 高温粒子流辐射特性影响因素分析 20 3.2.1 粒子半径的影响 20 3.2.2 数密度的影响 20 3.2.3 波长的影响 22 3.3 Fluent模拟仿真过程 23 3.3.1 辐射模型简化假设及选取 24 3.3.2 Fluent模拟仿真过程 25 3.4 本章小结 25 结论 27 致谢 28 参考文献 291 引言 1.1 研究背景 (责任编辑：qin) |