为减少一体化加力燃烧室内支板火焰稳定器高度与进口试验参数较高所导致的昂贵基础试验成本，采用经试验数据验证的数值计算方法，对不同高度的一体化模型加力燃烧室燃烧性能进行数值模拟，分析模型加力燃烧室高度变化和侧壁边界层效应对一体化加力燃烧室回流区、总压恢复系数以及燃烧效率的影响。在保持空间油雾场分布均匀与阻塞比一致的前提下，简化扇形加力燃烧室模型为矩形加力燃烧室模型，其中模型加力燃烧室高度H分别为200，150和100 mm，总长L=1 480 mm，宽B=125 mm。结果表明：模型加力燃烧室高度的降低对燃烧性能影响较小，其中回流率最大降幅为0.16%，总压恢复系数最大降幅为0.15%，燃烧效率的最大降幅为1.9%；模型加力燃烧室侧壁面边界的引入对燃烧性能影响较小，回流率、总压恢复系数最大降幅均小于1%，燃烧效率的最大降幅仅为0.7%；可以采用单支板火焰稳定装置降低高度的方法简化试验件设计。

In order to reduce the expensive cost of basic test caused by the high height of strut flame stabilizers and the high import test parameters in integrated afterburner, a numerical calculation method which had been verified by experimental data was used. The combustion performance of integrated model afterburner with different heights was simulated, and the influence rule of the height change and the sidewall boundary layer effect of model afterburner on the size of recirculation zone, total pressure recovery coefficient and combustion efficiency in integrated afterburner was summarized. On the premise of uniform fuel spray field and the same blocking ratio, the fanshaped afterburner model was simplified to rectangular afterburner model, in 200, 150 and 100 mm heights, 1 480 mm total length and 125 mm width. The results show that the combustion performance is less affected by decreasing height of the model afterburner, the maximum reduction of the recirculation rate, total pressure recovery coefficient and combustion efficiency are 0.16%, 0.15% and 1.9% respectively; the combustion performance is also less affected by introducing sidewall boundary of the model afterburner, the maximum reduction of the recirculation rate and total pressure recovery coefficient are both less than 1%, that of combustion efficiency is only 07%; the design of test specimen can be simplified by reducing the height of singlestrut flame stabilizer.

V231.2

国家科技重大专项（J2019-III-0004-0047)