关键词: 湍流, 预混火焰, 湍流特性

Abstract:

Experimental system for study on turbulent premixed combustion in stagnation flow was introduced in this paper. The non-reacting flow field of the system was diagnosed with Laser Doppler Anemometry (LDA). The measurement showed that the absolute turbulence increases with the laser probe approaching the stagnant panel. The contrary tendency appeared for the integral turbulent length scale which was measured with two-point correlating measurement. It is conjectured to be the result of compressed streamline through the axis of the stagnant stream.

Key words: Turbulence,  , premixed , flame,  , turbulent , characteristics