Non-Scanning 3D-CT Measurement with 40-Lens Tracking Camera for Turbulent Propane/Air Rich-Premixed Flame

Advanced measuring non-scanning three-dimensional computerized tomography (3D-CT) technique is proposed and accomplished for the turbulent premixed flame using multi-lens-camera photography. Using the technique, a set of instantaneous 3D light emission intensity distributions with a short time difference of 1.3 ms is obtained for a propane/air fuel-rich premixed turbulent flame anchored a pipe burner. The result shows a wrinkled flame front, diminishing the light intensity at the cusp/ridge regions. Assuming premixed gas velocity to be a constant, a (3D) distribution of local burning velocity is successfully evaluated from the transformation of the distributions for the time interval of two shooting time.