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为拓宽先进旋涡燃烧室运用领域,探索横向射流与先进旋涡燃烧室凹腔之间的相互作用,采用数值模拟方法,研究了燃料横向射流对凹腔内旋涡结构和燃料分布的影响,以及射流对燃烧室湍流燃烧流动的作用规律。结果表明,冷态射流时,凹腔内湍流强度随射流中心距凹腔的距离增大而增大,且旋涡结构逐渐趋于均匀稳定对称;横向射流可加强燃料与空气的卷吸混合,同时加剧凹腔内质量扩散输运;射流燃烧时,凹腔内可形成高温区域,但旋涡流场由冷态时的两对旋涡结构转变为单对旋涡结构,且旋涡相对不稳定。
In order to broaden the application field of advanced vortex combustor and explore the interaction between transverse jet and cavity of advanced vortex combustor, the effect of transverse jet of fuel on vortex structure and fuel distribution in cavity is studied by numerical simulation method. The law of turbulent combustion in combustion chamber. The results show that the intensity of turbulence in the cavity increases with the increase of the jet center distance away from the cavity, and the vortex structure tends to be uniform and symmetrical. In the lateral jet, the entrainment of fuel and air can be intensified. At the same time, Which can aggravate the mass diffusion transport in the cavity. When the jet burns, the cavity can form a high temperature region, but the vortex flow field changes from two pairs of vortex structures in cold state to single vortex structures, and the vortex is relatively unstable.