Turbomachine component having a flow contour feature

Abstract

A turbomachine component includes a main body having a gas path surface configured to be exposed to gases passing along a turbomachine gas path, a non gas path surface configured to be arranged in a turbomachine wheelspace outside the turbomachine gas path, and a non-axisymetric flow contour feature extending from the gas path surface to the non gas path surface.

1 . A turbomachine component comprising:
 a main body having a gas path surface configured to be exposed to gases passing along a turbomachine gas path, a non gas path surface configured to be arranged in a turbomachine wheelspace outside the turbomachine gas path, and a non-axisymetric flow contour feature extending from the gas path surface to the non gas path surface.   
     
     
         2 . The turbomachine component according to  claim 1 , wherein the main body includes a front face and an aft face, the non-axisymetric flow contour feature being arranged on the front face. 
     
     
         3 . The turbomachine component according to  claim 1 , wherein the non gas path surface defines one or more angel wings. 
     
     
         4 . The turbomachine component according to  claim 1 , wherein the non-axisymetric flow contour feature comprises a trough formed in each of the gas path surface and non gas path surface. 
     
     
         5 . The turbomachine component according to  claim 1 , wherein the non-axisymetric flow contour feature comprises a ridge formed in each of the gas path surface and non gas path surface. 
     
     
         6 . The turbomachine component according to  claim 1 , wherein the non-axisymetric flow contour feature comprises a depression and a protrusion formed the gas path and non gas path surfaces. 
     
     
         7 . The turbomachine component according to  claim 6 , wherein the depression is formed in the gas path surface. 
     
     
         8 . The turbomachine component according to  claim 6 , wherein the protrusion is formed in the non gas path surface. 
     
     
         9 . A turbomachine bucket comprising:
 an airfoil portion; and   a base portion supporting the airfoil portion, the base portion including one or more gas path surfaces configured to be exposed to gases passing along a turbomachine gas path, one or more non gas path surfaces configured to be arranged outside the turbomachine gas path, and a non-axisymetric flow contour feature extending from at least one of the one or more gas path surfaces to at least one of the one or more non gas path surfaces.   
     
     
         10 . The turbomachine bucket according to  claim 9 , wherein the non-axisymetric flow contour member comprises a trough formed in the one of the at least one of the one or more gas path surfaces and the one of the at least one of the one ore more non gas path surfaces. 
     
     
         11 . The turbomachine bucket according to  claim 9 , wherein the non-axisymetric flow contour member comprises a ridge formed in the one of the at least one of the one or more gas path surfaces and the at least one of the one ore more non-gas path surfaces. 
     
     
         12 . The turbomachine bucket according to  claim 9 , wherein the non-axisymetric flow contour feature comprises a depression and a protrusion formed in the one of the at least one of the one or more gas path surfaces and the at least one of the one ore more non gas path surfaces. 
     
     
         13 . The turbomachine bucket according to  claim 9 , wherein the base portion includes a front face and an aft face, the non-axisymetric flow contour feature being arranged on the front face. 
     
     
         14 . The turbomachine bucket according to  claim 9 , wherein the one of the at least one of the one or more non gas path surfaces defines an angle wing. 
     
     
         15 . A turbomachine comprising:
 a housing;   a gas path extending through the housing;   a wheelspace arranged within the housing and substantially fluidly separated from the gas path; and   at least one turbomachine component arranged in the housing, the turbomachine component including at least one gas path surface arranged within the gas path, at least one non gas path surface arranged within the wheelspace, and a non-axisymetric flow contour feature extending from the at least one gas path surface to the at least one non gas path surface.   
     
     
         16 . The turbomachine according to  claim 15 , wherein the turbomachine component includes a front face and an aft face, the non-axisymetric flow contour feature being arranged on the front face. 
     
     
         17 . The turbomachine according to  claim 15 , wherein the non-axisymetric flow contour feature comprises a trough formed in each of the gas path surface and non gas path surface. 
     
     
         18 . The turbomachine according to  claim 15 , wherein the non-axisymetric flow contour feature comprises a ridge formed in each of the gas path surface and non gas path surface. 
     
     
         19 . The turbomachine according to  claim 15 , wherein the non-axisymetric flow contour feature comprises a depression and a protrusion formed in one or more of the gas path surfaces and one or more of the non gas path surfaces. 
     
     
         20 . The turbomachine according to  claim 15 , wherein the turbomachine component comprises a turbine bucket.