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在超声速燃烧设备上进行了带凹槽的直连式双模态煤油燃料超燃冲压发动机污染与纯空气来流的对比试验.为了研究来流污染对超燃冲压发动机试验性能的影响,在相同的试验气体参数(马赫数为2,总温约为828K和总压约为800kPa)下,对带凹槽煤油燃料燃烧室进行了一系列对比燃烧试验.采用AHL3D软件对3个试验条件的燃烧室反应流场进行了数值模拟.计算和试验得到的压强分布比较接近且趋势一致.通过数值模拟获得反应流场的细节,探究污染影响的机理.
In a supersonic combustion facility, a comparative experiment was carried out on the direct-coupled bimodal kerosene-fuel scramjet and the pure air inflow with flutes. In order to study the influence of flow contamination on the test performance of the scramjet, Of the test gas parameters (Mach 2, the total temperature of about 828K and the total pressure of about 800kPa), a series of comparative tests were carried out on kerosene fuel tanks with flutes. The combustion of three test conditions was carried out using AHL3D software The numerical simulation of the flow field was carried out.The pressure distribution obtained by the calculation and the experiment was close to the same trend.The numerical simulation of the flow field was carried out to investigate the mechanism of the pollution.