Abstract
Abstract In order to provide confirmed experimental Favre averaged data for the validation of a new one-dimensional integral model of turbulent diffusion flame with large buoyancy effects, temperature and velocity fluctuation measurements have been carried out on the axis of a gas-fuelled burner at low Froude number. Temperature fluctuations have been measured by instantaneous compensation of the thermal inertia of fine wire thermocouples. Simultaneous measurements of temperature and velocity have pointed out that, on the burner axis, LDV results are not significantly biased toward hotter gas velocities, even if only the fuel is seeded. Results are used to calculate Favre averaged values of temperature and velocity, as well as velocity-temperature correlations.
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