Turbulence characteristics of an axisymmetric reacting flow
Abstract
Simultaneous two-component laser velocimeter measurements were made in the turbulent flow field following an axisymmetric sudden expansion with and without combustion. A specially designed correction lens was employed to correct for optical aberrations introduced by the circular tube. Mean axial and radial velocities, Reynolds stresses and triple-products were measured and are presented at axial positions ranging from x/H = 0.2 to 14. In addition, simultaneous time resolved temperature measurements were made in the reacting flow using high speed thermocouples. Velocity-temperature correlations were formed from the velocity and temperature measurements. The experimental measurements were compared to predictions generated by a code which employed the k-$\varepsilon$ turbulence model and the combustion model of Magnussen and Hjertager (1978). Possible sources of differences observed between model predictions and the measurements are discussed.
Degree
Ph.D.
Advisors
Thompson, Purdue University.
Subject Area
Mechanical engineering
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