旋流流动对水冲压发动机性能影响

刘立静; 李志强

doi:10.13224/j.cnki.jasp.2017.02.010

旋流流动对水冲压发动机性能影响

doi: 10.13224/j.cnki.jasp.2017.02.010

北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室,北京 100191

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出版历程
- 收稿日期: 2015-05-19
- 刊出日期: 2017-02-28

Effects of swirling flow on characteristics of water ramjet engine

摘要

摘要: 基于某药柱式水冲压发动机,建立粉末式水冲压发动机模型.利用Fluent软件模拟研究旋流流动对水冲压发动机流动与燃烧反应性能的影响.选择kε双方程模型作为湍流模型,有限速率/涡耗散模型作为燃烧模型,基于密度隐式耦合求解进行计算.结果表明:添加旋流叶片并增大旋流角度,燃烧室最高燃烧温度、平均燃烧温度、出口速度和比冲均增大.研究证明添加旋流叶片对水冲压发动机流动与燃烧反应性能有很大改进,且旋流角度越大,效果越明显.
- 水冲压发动机 /
- 旋流流动 /
- Mg/H2O反应 /
- 燃烧反应 /
- 旋流角度
Abstract: A swirlingstyle propellant water ramjet model was established on the basis of a particular model of columnstyle propellant water ramjet. The effect of swirling flow on the flow and reaction characteristics in the water ramjet was simulated by Fluent software. Turbulent flow simulation was performed using the standard kε two equation functions, and combustion reaction was calculated by finiterate/eddydissipation model. The functions were solved by implicit coupling calculation method based on the density. Results show that,adding swirling vanes and increasing the swirling angle can improve the maximum temperature, the average temperature, the outlet velocity and the specific impulse, which proves that adding swirling vanes make drastic improvements of flow and combustion reaction in the water ramjet engine, and the greater swirling angle means the better results.
- water ramjet engine /
- swirling flow /
- Mg/H2O reaction /
- combustion reaction /
- swirling angle

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参考文献(22)

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