Turbulent Flames – Faculty: Dan Haworth, Jacqueline O’Connor, Dom Santavicca, Yuan Xuan
Flame Interaction – Faculty: Jacqueline O’Connor, Dom Santavicca
Flame-flame interactions are an important large-scale combustion phenomenon in both gas turbine main combustors and augmentors that has received relatively little research treatment. The extent of flame-flame interaction can affect static flame stabilization (whether the flame stays in the combustor or not), dynamic flame stability (how susceptible the flame is to acoustics), heat transfer (to both the walls and the turbine in main combustors), and emissions production. In these studies we will look at each of these issues as a function of distance between the flames, flame stabilization mechanism, flow features, acoustic field characteristics, fuel/air mixing, and other combustor parameters.
Swirling Flow and Flame Dynamics – Faculty: Jacqueline O’Connor, Dom Santavicca
Swirling flows are a standard method of flame stabilization in a variety of industrial applications, including power generation gas turbines and aircraft engines. While these flows are effective at providing static flame stability, they are highly complex and hydrodynamically unstable flows. Even in the absence of a flame, the behavior of swirling flows is still largely uncharacterized, particularly at high Reynolds numbers where many industrial devices operate. Research in this area will include detailed measurements of swirling flow dynamics in both non-reacting and reacting flows, as well as low-order modeling of hydrodynamic stability characteristics of swirling flows. Variations in swirling flow behavior will be measured under a number of application-relevant conditions, including various chamber geometries and inlet conditions.