| 摘要:采用STAR-CD软件对大缸径气体机的三维流动、燃烧进行仿真分析，通过与文献中的放热率曲线的对比，验证了三维仿真分析的合理性；得到了大缸径气体机缸内流场分布的详细信息，为后续优化奠定了基础，并为结构计算提供了热力学边界条件。在此基础上分析了连接通道个数对气体机性能的影响。结果表明:对于所研究的大缸径气体机，预燃室容积相同时，6个连接通道的燃烧效果好于4个通道的。 |
| 关键词: 气体机 放热率曲线 热力学边界条件 连接通道 |
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| Simulation Study of In-cylinder Flow Combustion of Large-bore Gas Engine |
| Liu Chenpeng,Zhu Jun,Wu Jie,Xia Qian,Liu Bo |
| China Shipbuilding Power Engineering Institute Co.,Ltd., Shanghai 200129;Ningbo C.S.I.Power & Machinery Group Co., Ltd.,Zhejiang Ningbo 315032 |
| Abstract:3D flow and combustion simulation was applied with STAR-CD software, and the rationality of 3D simulation analysis was validated by comparing with rate of heat release(ROHR) curve in the listed literature. Then detailed spatial information of flow field distribution in large bore gas engine was obtained, which laid the foundation for the subsequent optimization and provided thermodynamic boundary conditions to structural calculation. On the basis, the influence of the number of channels on the gas engine performance was studied. The results show that on this engine when the pre-chamber volume is the same, the combustion with six connecting channels is better than that with four. |
| Key words: gas engine rate of heat release curve thermodynamic boundary condition connecting channels |
