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Third Symposium on Turbulence and Shear Flow Phenomena
June, 25-27, 2003, International Center, Sendai, Japan

DOI: 10.1615/TSFP3

COMBINED LOA-CARS MEASUREMENTS OF VELOCITY-TEMPERATURE CORRELATIONS IN TURBULENT FLAMES

pages 1013-1018
DOI: 10.1615/TSFP3.1690
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Краткое описание

Simultaneous measurements of velocity and temperature were conducted in a turbulent jet diffusion flame. Temperatures were measured by using Coherent Anti-Stokes Raman Spectroscopy (CARS) whereas Laser Doppler Anemometry (LDA) was used for the velocity measurements. The temperature and velocity samples were processed to form (time-dependent) velocity-temperature correlation functions. The measured correlation functions indicated that the gradient-diffusion hypothesis is reasonably accurate for the radial direction. However, for the axial direction the gradient diffusion hypothesis is accurate only in the central region of the flame while counter-gradient diffusion is found in the outer region.

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