基于Fluent的定容燃烧弹内预混层流燃烧模拟  

Simulation of Premixed Laminar Combustion in the Constant Volume Combustion Bomb with Fluent

作　　者：刘磊[1] 孙俊[2] 李格升[2] 吕晓辉[2] 

机构地区：[1]武汉交通职业学院船舶与轮机工程系,武汉430065 [2]武汉理工大学能源与动力工程学院,武汉430063

出　　处：《船海工程》2012年第5期107-111,共5页Ship & Ocean Engineering

基　　金：湖北省自然科学基金重点资助项目(2009CDA029)

摘　　要：利用GAMBIT软件对定容燃烧弹腔体进行网格划分,对Quad-Map、Quad-Pave、Tri-Pave3种不同网格划分机理进行了比较研究。结果表明:基于Quad-Map机理模拟定容燃烧弹预混层流燃烧时,无法实现预混气体弹体中心点燃;基于Quad-Pave机理模拟时,由于网格本身的非对称性,而导致模拟结果的非对称,火核呈不规则几何形状分布;基于Tri-Pave机理模拟时,在实现预混气体弹体中心点燃的同时,模拟结果对称,火核呈圆球形状分布,与实验结果基本吻合。建立了氢气容弹内预混燃烧Fluent模型,其模拟结果与实验结果基本吻合。Using GAMBIT to mesh the cavity of constant volume combustion bomb.The mesh mechanism of Quad-Map,Quad-Pave and Tri-Pave methods was compared.The results showed that premixed gas can not be ignited with Quad-Map mechanism.The asymmetry of the grid would lead the non-symmetric simulation results,and irregular geometry of the nuclear fire distribution with Quad-Pave mechanism.Premixed gas can be ignited with Tri-Pave mechanism,the fire nuclear shape cylindrical distribution.The Fluent model of H2 premixed combustion in constant volume combustion bomb was established.The simulation results were consistent with the experimental results.

关 键 词：FLUENT 定容燃烧弹 层流火焰 

分 类 号：TK438.9[动力工程及工程热物理—动力机械及工程]