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中文摘要：
为进一步深化对中心空气射流及相关参数影响燃烧室性能变化规律的认识,采用雷诺应力模型（RSM）开展了有无中心空气射流、射流速度与射流孔径对燃烧效果影响的仿真研究。结果表明：增加空气中心射流以及改变相关参数能提高燃烧效率的主要原因在于湍流强度的增强改善了传热性能。壁面附近的协同角是影响旋流冷壁效果的重要因素,协同角越接近90°,越有利于获得较好的冷壁效果。
英文摘要：
To further understand the principle of effects on combustion performance by central air jet and its associated parameters, Reynolds Stress Model （RSM） was used to carry out the simulations of central air jet, jet velocity and jet hole diameter. The results showed that, in addition to resolved the defect of mixing of fuel and oxidizer near the axis, the main reasons of add air central jet and change the parameters improving the combustion efficiency was that enhanced turbulence intensity improved heat transfer performance. Synergy angle near the wall. The closer synergy angle to 90°, the the wall. the wall is an important factor of the cooling effect of more advantageous for obtaining good cooling effect of
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