Compound Cooling Flow Turbulator for Turbine Component

Abstract

Multi-scale turbulation features, including first turbulators ( 46, 48 ) on a cooling surface ( 44 ), and smaller turbulators ( 52, 54, 58, 62 ) on the first turbulators. The first turbulators may be formed between larger turbulators ( 50 ). The first turbulators may be alternating ridges ( 46 ) and valleys ( 48 ). The smaller turbulators may be concave surface features such as dimples ( 62 ) and grooves ( 54 ), and/or convex surface features such as bumps ( 58 ) and smaller ridges ( 52 ). An embodiment with convex turbulators ( 52, 58 ) in the valleys ( 48 ) and concave turbulators ( 54, 62 ) on the ridges ( 46 ) increases the cooling surface area, reduces boundary layer separation, avoids coolant shadowing and stagnation, and reduces component mass.

1 . A turbine component with an interior cooling surface comprising:
 a first plurality of surface features separated by a first plurality of valleys, the first plurality of surface features configured to increase turbulence in a coolant flowing adjacent to the interior cooling surface;   a second plurality of surface features separated by a second plurality of valleys, each of the second plurality of surface features smaller than each of the first plurality of surface features, the second plurality of surface features located between and non-parallel to the first plurality of surface features; and   a third plurality of surface features, each smaller than each valley from second plurality of valleys;   wherein:
 the first plurality of surface features comprise first ridges. 
   
     
     
         2 . The turbine component of  claim 1 , wherein:
 the second plurality of surface features comprises grooves.   
     
     
         3 . The turbine component of  claim 1 , wherein:
 the second plurality of surface features comprises second ridges.   
     
     
         4 . The turbine component of  claim 1 , wherein:
 the second plurality of surface features comprises bumps.   
     
     
         5 . The turbine component of  claim 1 , wherein:
 the second plurality of surface features comprises dimples.   
     
     
         6 . The turbine component of  claim 1 , wherein:
 the second plurality of surface features are convex.   
     
     
         7 . The turbine component of  claim 1 , wherein:
 the second plurality of surface features are concave.   
     
     
         8 . The turbine component of  claim 1 , wherein:
 one or more of the second plurality of surface features is convex.   
     
     
         9 . The turbine component of  claim 1 , wherein:
 one or more of the second plurality of surface features is concave.   
     
     
         10 . The turbine component of  claim 1 , wherein:
 one or more of the second plurality of surface features comprises a gap.   
     
     
         11 . The turbine component of  claim 1 , wherein:
 one or more of the second plurality of surface features is configured to increase a surface area of the interior cooling surface.   
     
     
         12 . The turbine component of  claim 1 , wherein:
 one or more of the second plurality of surface features is configured to increase turbulence in a coolant flowing adjacent to the interior cooling surface.   
     
     
         13 . The turbine component of  claim 1 , wherein:
 one or more of the second plurality of surface features is configured to decrease a mass of the turbine component.   
     
     
         14 . The turbine component of  claim 1 , wherein:
 the third plurality of surface features comprises grooves.   
     
     
         15 . The turbine component of  claim 1 , wherein:
 the third plurality of surface features comprises third ridges.   
     
     
         16 . The turbine component of  claim 1 , wherein:
 the third plurality of surface features comprises bumps.   
     
     
         17 . The turbine component of  claim 1 , wherein:
 the third plurality of surface features comprises dimples.   
     
     
         18 . The turbine component of  claim 1 , wherein:
 the third plurality of surface features are convex.   
     
     
         19 . The turbine component of  claim 1 , wherein:
 the third plurality of surface features are concave.   
     
     
         20 . The turbine component of  claim 1 , wherein:
 one or more of the third plurality of surface features is convex.   
     
     
         21 . The turbine component of  claim 1 , wherein:
 one or more of the third plurality of surface features is concave.   
     
     
         22 . The turbine component of  claim 1 , wherein:
 one or more of the third plurality of surface features comprises a gap.   
     
     
         23 . The turbine component of  claim 1 , wherein:
 one or more of the third plurality of surface features is configured to increase a surface area of the interior cooling surface.   
     
     
         24 . The turbine component of  claim 1 , wherein:
 one or more of the third plurality of surface features is configured to increase turbulence in a coolant flowing adjacent to the interior cooling surface.   
     
     
         25 . The turbine component of  claim 1 , wherein:
 one or more of the third plurality of surface features is configured to decrease a mass of the turbine component.   
     
     
         26 . The turbine component of  claim 1 , wherein:
 the third plurality of surface features is located between and non-parallel to the second plurality of surface features.   
     
     
         27 . The turbine component of  claim 1 , wherein:
 the second plurality of surface features have a sinusoidal geometry.   
     
     
         28 . The turbine component of  claim 1 , wherein:
 the second plurality of surface features comprise alternating convex ridges and concave valleys.   
     
     
         29 . The turbine component of  claim 1 , wherein:
 the second plurality of surface features are substantially perpendicular to the first plurality of surface features.   
     
     
         30 . The turbine component of  claim 1 , wherein:
 each of the second plurality of surface features is elongated and defines a longitudinal axis that is oriented substantially parallel to a flow direction of the coolant.