Abstract
Methane kernel-vortex interactions have been studied using partial image velocimetry (PIV) and 2-l OH thermometry to determine the aerodynamic conditions necessary to produce viable combustion. Three vortex rotational velocities (strengths) have been categorized to explore a range of fluidic motion from completely laminar to transitional. Derived from the 2-D PIV velocity profiles, the strain rate along the edge of the flame-vortex interface has been determined for each of the three vortex strengths. While these results are preliminary, there is a significant increase in the maximum strain rate each kernel undergoes as the strength of the vortex increases. With an increase in vortex rotational velocity of 250% (weak to medium strengths) there is a 60% increase in maximum strain rate, while a 400% increase in vortex rotational velocity (weak to strong) shows a 120% increase in maximum strain rate over the times observed. Thermometry results show an increase in maximum average kernel temperature across the time of interest of 3%, 14% and 19% for the weak vortex, the medium vortex and the strong vortex respectively when compared to the undisturbed kernel.
Original language | English (US) |
---|---|
Title of host publication | Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion" |
Publisher | Combustion Institute |
Pages | 651-657 |
Number of pages | 7 |
ISBN (Print) | 9781604239454 |
State | Published - Jan 1 2007 |
Externally published | Yes |