MORPHOLOGY OF UNCONFINED AND CONFINED SWIRLING FLOWS UNDER NON-REACTING AND COMBUSTION CONDITIONS

Swirl is used in practically all types of combustion systems, including gas turbine combustion, furnaces and boilers. In combustion systems, the strong favorable effect of swirl to combustion air and/or fuel has been extensively used for flame stabilization, high heat release per unit volume, and clean efficient combustion. Flow and combustion characteristics of non-reacting and reacting swirl flowfields are characterized using a simulated Lean Direct Injection (LDI) method in a double concentric swirl burner. The LDI scheme had a large number of small size holes for fuel injection to provide rapid fuel mixing into the surrounding combustion air. The double concentric burner allowed examination of radial distribution of swirl in the burner (co- and counter-flow) under unconfined and confined conditions, both without and with combustion. The input thermal loading to the burner was held constant at 33 kW for all flames. Particle image velocimetry (PIV), optical emission spectrosco…

Author: archer, sean stacey

Source: University of Maryland

Download Link: Click Here To Download This Report (PDF)

Reference URL 1: Visit Now

Reference URL 2: Visit Now