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为清晰了解驻涡燃烧室内流场的涡系分布,对中心驻体为67%燃烧室当量宽度的驻涡燃烧室流场,在驻涡腔无喷射和有喷射两种状况下分别进行冷态数值模拟,详细研究流场内旋涡分布情况。结果表明:流道前部存在4个影响很小、沿流动方向运动、分布于驻体与端壁角区的螺旋状旋涡;流道后部存在1个由2个旋涡构成、面积较大的回流区;流道中部的驻涡区旋涡情况复杂,在驻涡腔无喷射情况下,主流与驻涡区之间悬挂驻留2个稳定的驻涡,驻涡腔内存在不稳定且数目不确定的旋涡;当驻涡腔前驻体有喷射存在时,驻涡腔内形成4个均匀且稳定的旋涡.
In order to clearly understand the vorticity distribution of the flow field in the chamber, the flow fields in the center of the vortex chamber with the equivalent chamber width of 67% of the combustion chamber are cooled under no injection and jetting conditions Numerical simulation, a detailed study of the distribution of vortex flow field. The results show that there are four spiral vortices in the front of the runner, which have little influence and move along the flow direction and distribute in the corner zone of the plant and the end wall. There are two spiral vortices in the rear of the runner, which are composed of two vortices. In the middle of the runner, the vortices in the vortex zone are complex. In the case of no ejection in the vortex chamber, two stable vortices reside between the mainstream and the vortex zone, and the number of unstable vortex chambers in the vortex chamber is not large Determine the vortex; When the presence of injection in the vortex chamber prior to the existence of the vortex cavity in the formation of four uniform and stable vortex.