
 
 Preheat Zone: Negligibly small heat release.
Preheat Zone: Negligibly small heat release.
 
 
 
 
 
 Area Method
Area Method
 Vu: average flow velocity in tube, At: tube cross sectional area, AF: conical surface area of flame
This method is known as area method.
Vu: average flow velocity in tube, At: tube cross sectional area, AF: conical surface area of flame
This method is known as area method. 
By carrying out a mass balance across the flame, 
 Vu - average flow velocity of the unburned fuel-air mixture
Vu - average flow velocity of the unburned fuel-air mixture
At - cross-sectional area of the tube
AF - conical surface area of the flame
 
flame surface area,
 
 
