Influence of Structural Parameters on Combustion Performance of RQL Combustor
In this paper,the influence of structural parameters on combustion performance of a RQL combustor with vortex plate structure as a swirling device at the head of flame cylinder is studied.The influences of the main combustion hole,the number of vortex plates,the axial position of the quenched hole,the number of inner and outer rings of the quenched hole and the type of quenched hole on the flow,combustion performance and NOx emission characteristics in the combustion chamber were studied by numerical simulation.The results show that the flow in the oil-rich area of the combustion chamber is realized by the effective coordination between the vortex plate and the main combustion hole.The number of eddies is the main parameter that affects the shape and size of the reflux area in the oil-rich region.The desired flow field can be obtained by optimizing the number of eddies.The quenching zone can complete the instantaneous transition from rich oil to poor oil through the quenching hole rapid jet flow,and prevent the area with large NOx generation close to the ideal equivalent ratio.Structural parameters such as axial position and type of quenched hole are the main structural parameters that affect combustion performance.
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