Vortex generator, and fuel injection system of a gas turbine with such vortex generator

Abstract

A vortex generator, such as for a fuel injection system of a gas turbine, includes a base area and a vortex generator body extending in a tapering fashion from the base area with a predetermined height. A rapid fuel-air mixing at allowable pressure drops for higher firing temperature gas turbines and within short burner-mixing length or time scales is achieved by the vortex generator body forming at least two partial vortex generators, whereby each of the at least two partial vortex generators has its own trailing edge.

1 . Vortex generator suitable for a fuel injection system of a gas turbine, the vortex generator comprising:
 a base area; and   a vortex generator body extending in a tapering fashion from said base area with a predetermined height, said vortex generator body forming at least two partial vortex generators, whereby each of said at least two partial vortex generators has its own trailing edge.   
     
     
         2 . Vortex generator as claimed in  claim 1 , wherein said base area is formed as a triangle. 
     
     
         3 . Vortex generator as claimed in  claim 1 , wherein said at least two partial vortex generators are arranged at different heights with respect to said base area. 
     
     
         4 . Vortex generator as claimed in  claim 3 , wherein said at least two partial vortex generators are arranged one above the other with respect to said base area, said upper partial vortex generator having a first height and said lower partial vortex generator having a second height. 
     
     
         5 . Vortex generator as claimed in  claim 1 , wherein said at least two partial vortex generators are arranged in a predetermined angle to each other. 
     
     
         6 . Vortex generator as claimed in  claim 5 , wherein said predetermined angle between said two partial vortex generators can vary between 0° and 45°. 
     
     
         7 . Vortex generator as claimed in  claim 1 , wherein said at least two partial vortex generators each have an associated attack and sweep angle. 
     
     
         8 . Vortex generator as claimed in  claim 7 , wherein said at least two partial vortex generators are arranged one above the other with respect to said base area, said upper partial vortex generator having a first height and said lower partial vortex generator having a second height, and wherein said upper partial vortex generator has a higher attack and sweep angle than said lower partial vortex generator. 
     
     
         9 . Vortex generator as claimed in  claim 1 , in combination with:
 a fuel injection means provided between said at least two partial vortex generators.   
     
     
         10 . Vortex generator as claimed in  claim 9 , wherein said fuel injection means is located with different distances between said location and said at least two partial vortex generators. 
     
     
         11 . Vortex generator as claimed in  claim 1 , wherein said at least two partial vortex generators have a leading edge, and that the leading edge of said at least two partial vortex generators has a predetermined shape. 
     
     
         12 . Vortex generator as claimed in  claim 1 , in combination with a fuel injection system of a gas turbine, comprising:
 a fuel injection means configured to include the vortex generator; and   a gas turbine which receives fuel from the fuel injection means.