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对不同燃烧条件下后钝体开口先进旋涡燃烧室(AVC)的燃烧性能进行了数值模拟,结果表明,后钝体开口AVC在各工况下都能实现稳定燃烧。随着来流速度的增大,总压损失增大,燃烧效率减小,凹腔内高温分布区域增大且分布更加均匀。随着来流温度的提高,总压损失先减小后保持不变,燃烧效率增大。随着壁面温度的提高,凹腔内温度升高且分布更加均匀,总压损失增大,燃烧效率减小。随着燃气当量比的增大,总压损失先增大后减小,燃烧效率减小。
The combustion performance of the advanced vortex combustor (AVC) with bluff body opening under different combustion conditions was numerically simulated. The results show that the AVC after open blunt body can achieve stable combustion under all conditions. With the increase of inflow velocity, the total pressure loss increases and the combustion efficiency decreases. The high temperature distribution in the cavity increases and distributes more evenly. With the increase of the temperature of the incoming stream, the total pressure loss decreases first and remains unchanged, and the combustion efficiency increases. With the increase of the wall temperature, the temperature in the cavity increases and distributes more evenly, the total pressure loss increases, and the combustion efficiency decreases. With the increase of gas equivalence ratio, the total pressure loss first increases and then decreases, and the combustion efficiency decreases.