| 摘要:为优化斯特林发动机燃烧室温度场、流场，进一步提高加热管换热能力，提出燃烧室排气结构优化和引射比设计优化方案，并开展数值模拟和试验验证。经试验验证：排气结构和引射比对外燃系统效率影响较大；排气结构和引射比可以进行组合优化，能进一步提升外燃系统效率，组合优化后外燃系统效率最高达92.2%，提升1.4%； 排气结构优化和引射比设计优化对整机性能都有提升；引射比对整机性能的影响试验与数值计算较吻合，外燃系统效率提升1.19%。 |
| 关键词: 斯特林发动机 燃烧室 数值模拟 外燃系统 |
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| Numerical Simulation and Experimental Validation of Stirling Engine Combustor |
| WU Peng,LIN Guangtao,LAN Jian,LYU Tian,SONG Yiping,WANG Fengyan |
| Shanghai Fourth Military Representative Office of Navy,Shanghai 201108,China;Shanghai Marine Diesel Engine Research Institute,Shanghai 201108,China |
| Abstract:In order to optimize the combustor temperature field and flow field of Stirling engine，and further improve the heat transfer capacity of heating tube，the optimized scheme of combustor exhaust structure and ejection ratio was put forward，and the numerical simulation and experimental verification is carried out.The experimental results verifies that：Exhaust structure and ejection ratio have great influence on the efficiency of external combustion system；Exhaust structure and ejection ratio can be combined to further improve the efficiency of external combustion system，and the combined efficiency can reach up to 92.2%，with an increase of 1.4%；Optimization of exhaust position and ejection ratio can improve the performance of the whole engine；The effect test of ejection ratio on the performance of the engine is in good agreement with the numerical calculation，and the efficiency of external combustion system is increased by 1.19%. |
| Key words: Stirling engine combustor numerical simulation external combustion system |
