开口向上的环形腔宽度对弹射载荷的影响

为了研究开口向上的环形腔宽度对低温燃气弹射初容室内载荷的影响，采用计算流体动力学方法，结合SST湍流模型、有限速率／涡耗散燃烧模型和域动分层动网格技术，建立密闭空间导弹弹射过程二次燃烧模型。在与实验对比验证的基础上，结合数值模拟研究了开口向上的环形腔宽度对低温燃气弹射载荷的影响。结果表明：环形腔宽度为110 mm时，弹射载荷变化最平稳，且无明显双峰现象。研究结果为导弹燃气弹射的初容室结构设计提供参考。

Chamber Width Influence on Gas-Ejection Load

To study the upward annular chamber width influence on lower-temperature gas-ejection load, the computational fluid dynamics methods, SST turbulent model, Finite-rate/Dissipation model and dynamic mesh method were adopted to establish the ejection secondary-combustion model compared with experimental results and the obstacle width influence on ejection load. Results show that while the annular chamber width is 110 mm,the load change most gently and without double peak value. Results can provide reference for designing initial chamber structure.