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为了获得涡流冷壁旋流燃烧室的双旋涡结构对其燃烧流动性能的影响规律,改变切向入口的进口速度,对其内部流场进行了数值模拟。结果表明:在燃烧工况下,双旋涡结构较冷态时更难形成;随着切向入口的进口速度增加,涡流冷壁旋流燃烧室的燃烧效率较旋流燃烧室增大2%左右,壁面温度从1200K降低至600K,出口CO2的排放量降低;双旋涡结构会增加燃烧室的总压损失,但是增加的程度很小。
In order to obtain the influence law of the double vortex structure of swirling cold wall swirl combustor on its combustion fluidity, the inlet velocity of tangential inlet was changed and the internal flow field was numerically simulated. The results show that it is more difficult to form twin vortex structures in the cold state under the combustion conditions. With the increase of the inlet velocity at the tangential inlet, the combustion efficiency of the swirling cold-wall swirling combustion chamber increases about 2% , The wall temperature is reduced from 1200K to 600K, and the emission of CO2 at the outlet is reduced. The double vortex structure increases the total pressure loss in the combustion chamber, but the degree of increase is small.