回流燃烧室燃油雾化分析

Atomization Analysis of Fuel for Circumfluence Combustor

为了研究弹用涡喷发动机燃烧室的雾化特性,采用Fluent软件对回流燃烧室进行热态数值模拟,用SIMPLE算法结合k-ε的湍流模型,燃烧模型使用涡耗散模型来分析和计算化学反应速度,得到了燃烧室内的燃油分布,燃油的雾化特性,燃油分布基本均匀,喷嘴雾化锥角偏大的结论。

To study the combustor spray characteristics of missile-used turbojet engine, some numerical simulation for the cireumfluence combustor were completed by the FLUENT software. SIMPLE algorithm coupling with κ-ε turbulence model was adopted to simulate flow field and eddy-dissipation model was utilized to assess chemical reaction speed in the combustor. Fuel distribution in the combustor and the characteristic of spray for fuel have been obtained from the simulation and the result showed that fuel distribution was uniform and atomization angle was big.