Technology: How RVC Technology Works
Recirculating Vortex Combustor ("RVC")

Source: Zukoski 1954

Challenge:

  • Flame stabilization requires creation of low velocity regions
  • Low emissions requires lean conditions (excess air)
  • But lean conditions cause instabilities, flame blow out
High-speed images of Circular Cylinder, Square Cylinder at Re = 40,000, Equivalence Ratio = 1.0
Source: AIAA 2007-0168
High-speed images of Circular Cylinder, Square Cylinder and V. Gutter at Re = 40,000, Near Extinction
Source: AIAA 2007-0168

Idea:

  • Trap the recirculation zone between two physical bodies to extend lean flammability limits - "Trapped Vortex Combustor"
  • The cavity flow is protected from the surrounding flowfield
Lean Flame Inc. has developed its own superior version Re-circulating Vortex Combustor - "RVC"
Recirculating Vortex Combustor schematic