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.
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)
