无隙锥形旋流器燃烧室中流场分叉现象成因的探讨

本文以实验为依据, 结合分析和推理, 对在无隙锥形旋流器燃烧室中发生的流场分叉现象的成因进行了初步探讨。 

CAUSATION OF BIFURCATION PHENOMENON IN A COMBUSTOR WITH A NON SLOT CONICAL SWIRLER

The causation of the bifurcation phenomenon in a gas turnine combustor with a non slot conical swirler has been studied preliminarily,based on a lot of experiments and in light of theoretical analysis and deduction.According to the theoretical analysis,the bifurcation phenomenon in a flowing process may be occurred,as the process is controlled by a non linear N S equations.But it can be realized only in such a case,that a feed back procedure is existing.We found out that there were three geometrical factors controlling its feed back procedure in the gas turbine combustor with a non slot conical swirler.In order to remove the bifurcation pheromenon in the combustor,some measures are suggested,which are useful to eliminating flame fluctuation and expanding the flame extinction extent.