A VORTEX-FLAME INTERACTION STUDY USING 4-WAVE-MIXING TECHNIQUES

Temperature and NO concentration can change dramatically during a vort ex-flame interaction. In this paper, a vertically mounted buoyant hydr ogen-nitrogen jet diffusion flame is used to study vortex-flame intera ction. Single shot measurements of temperature by Coherent Anti-Stokes Raman Scattering (CARS) and of NO concentration by Degenerate Four Wa ve Mixing (DFWM) are used to investigate the temporal and spatial evol ution of the flame. The results are compared with theoretical predicti ons. Temperature and mole fraction are presented in two-dimensional ma ps. Experimental and theoretical results are in excellent agreement.