Airfoil array with an endwall protrusion and components of the array
AssigneeUnited Technologies Corporation
InventorsEunice Allen-Bradley, Eric A. Grover, Thomas J. Praisner, Joel H. Wagner
Life of this patent
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Abstract
An airfoil array includes a laterally extending endwall 56 with a series of airfoils such as 28, or 38 projecting from the endwall. The airfoils cooperate with the endwall to define a series of fluid flow passages 74. The endwall has a hump 84 toward a pressure side of the passage and a less elevated profile toward a suction side of the passage for reducing secondary flow losses.
Claims30
An airfoil array comprising a laterally extending endwall with a series of airfoils projecting therefrom, each airfoil having a suction surface corresponding to an airfoil suction side and a pressure surface corresponding to an airfoil pressure side;
- the airfoils cooperating with the endwall to define a series of fluid flow passages, the suction surface of a first airfoil defining a suction side of a first fluid flow passage, the pressure surface of a second airfoil defining a pressure side of the first fluid flow passage;
- and
- wherein the endwall has a pressure side hump that blends into a less elevated endwall profile with increasing lateral displacement toward the suction side of the first fluid flow passage, the less elevated profile being noncomplementary with respect to the hump, said hump having at least a portion extending from the pressure side of the second airfoil, the hump having a concave downward profile, and the hump being wholly disposed on the pressure side of the second airfoil.
A turbine component comprising:
- a laterally extending endwall having at least one airfoil, said at least one airfoil having a suction surface and a pressure surface, the pressure surface corresponding to an airfoil pressure side, the at least one airfoil cooperating with the endwall to define a portion of fluid flow passages on each of said suction surface and said pressure surface, the endwall having a pressure side hump that blends into a less elevated endwall profile with increasing lateral displacement away from said pressure surface, the less elevated profile being noncomplementary with respect to the hump, said hump having at least a portion extending from the pressure surface, the hump having a concave downward profile, and the hump being wholly disposed on the pressure side of the at least one airfoil.
Dependencies are inferred from the claim text.