Simultaneous multi-point temperature measurements by Laser Rayleigh Scattering in turbulent diffusion flames.

Abstract

The instantaneous spatial temperature profile is measured by the Laser Rayleigh Scattering method using a detector which has 512 photodiode elements in one line. It was applied to two typical turbulent diffusion flames with different degrees of turbulence. The results obtained are as follows. (1) A comparatively large scale of temperature fluctuation dominates the temperature fluctuation intensity in turbulent diffusion flames. (2) The average and instantaneous maximum temperature tends to decrease when the Re number increases, and consequently the turbulence seems to increase.