Hole arrangement of liners of a combustion chamber of a gas turbine engine with low combustion dynamics and emissions

Abstract

A gas turbine combustion chamber with an inner housing and an outer housing the inner housing having an inner wall element with a first hole arrangement and a second hole arrangement is provided. The inner wall element envelopes a burner volume. The first hole arrangement has first holes arranged in a first areal density, the second hole arrangement has second holes arranged in a second areal density. The outer housing has an outer wall element with a further first hole arrangement and a further second hole arrangement. The outer wall element of the outer housing envelops the inner wall element of the inner housing so that a gap in between is formed. The further first hole arrangement has further first holes arranged in a further first areal density, the further second hole arrangement has further second holes arranged in a further second areal density.

1 . A combustion chamber for a gas turbine, the combustion chamber comprising:
 an inner housing and an outer housing, wherein the inner housing comprises an inner wall element which comprises a first hole arrangement and a second hole arrangement, wherein the inner wall element envelopes a burner volume of the combustion chamber, wherein the first hole arrangement comprises first holes through which first holes fluid is streamable,   wherein the first holes are arranged in a first areal density, wherein the second hole arrangement comprises second holes through which second holes fluid is streamable, wherein the second holes are arranged in a second areal density, and wherein the first areal density differs from the second areal density, and   wherein the outer housing comprises an outer wall element which comprises a further first hole arrangement and a further second hole arrangement, wherein the outer wall element of the outer housing at least partially envelops the inner wall element of the inner housing such that a gap between the inner wall element and the outer wall element is formed,   wherein the further first hole arrangement comprises further first holes through which further first holes fluid is streamable, wherein the further first holes are arranged in a further first areal density,   wherein the further second hole arrangement comprises further second holes through which further second holes fluid is streamable, wherein the further second holes are arranged in a further second areal density, and wherein the further first areal density differs from further the second areal density.   
     
     
         2 . The combustion chamber according to  claim 1 , wherein the inner wall element extends along a circumferential direction around a central axis of the combustion chamber, and/or wherein the outer wall element extends along the circumferential direction around the central axis of the combustion chamber. 
     
     
         3 . The combustion chamber according to  claim 1 , wherein the inner wall element extends along a circumferential direction around a central axis of the gas turbine, and/or wherein the outer wall element extends along the circumferential direction around the central axis of the gas turbine. 
     
     
         4 . The combustion chamber according to  claim 2 , wherein the first holes of the first hole arrangement are formed into the inner wall element one after another along the circumferential direction for forming at least one first row of first holes, and/or wherein the further first holes of the further first hole arrangement are formed into the outer wall element one after another along the circumferential direction for forming at least one further first row of further first holes. 
     
     
         5 . The combustion chamber according to  claim 2 , wherein the second holes of the second hole arrangement are formed into the inner wall element one after another along the circumferential direction for forming at least one second row of second holes, and/or wherein the further second holes of the further second hole arrangement are formed into the outer wall element one after another along the circumferential direction for forming at least one further second row of further second holes. 
     
     
         6 . The combustion chamber according to  claim 2 , wherein the first holes of the first hole arrangement are formed into the inner wall element one after another along a first direction, wherein the first direction differs from the circumferential direction for forming at least one further first row of first holes, wherein the further first holes of the further first hole arrangement are formed into the outer wall element one after another along a further first direction, wherein the further first direction differs from the circumferential direction for forming at least one further outer first row of further first holes. 
     
     
         7 . The combustion chamber according to  claim 6 , wherein a first angle between the first direction and the circumferential direction is between 10° and 80°, and/or wherein a further first angle between the further first direction and the circumferential direction is between 10° and 80°. 
     
     
         8 . The combustion chamber according to  claim 2 , wherein the second holes of the second hole arrangement are formed into the inner wall element one after another along a second direction, wherein the second direction differs from the circumferential direction for forming at least one further second row of second holes, and/or wherein the further second holes of the further second hole arrangement are formed into the outer wall element one after another along a further second direction, wherein the further second direction differs from the circumferential direction for forming at least one further outer second row of further second holes. 
     
     
         9 . The combustion chamber according to  claim 8 , wherein a second angle between the second direction and the circumferential direction is between 10° and 80°, and/or wherein a further second angle between the further second direction and the circumferential direction is between 10° and 80°. 
     
     
         10 . A method for producing a combustion chamber for a gas turbine, the method comprising:
 forming a first hole arrangement comprising first holes into an inner wall element of an inner housing of the combustion chamber, wherein through the first holes fluid is streamable, wherein the first holes are arranged in a first areal density, and   forming a second hole arrangement which comprises second holes into the inner wall element, wherein through the second holes fluid is streamable, wherein the second holes are arranged in a second areal density,   wherein the first areal density differs from the second areal density, and wherein the inner wall element envelopes a burner volume of the combustion chamber,   arranging an outer wall element of an outer housing of the combustion chamber with respect to the inner wall element such that the outer wall element at least partially envelops the inner wall element and such that a gap between the inner wall element and the outer wall element is formed,   forming into the outer wall element a further first hole arrangement which comprises further first holes through which further first holes a further fluid is streamable, wherein the further first holes are arranged in a further first areal density, and   forming into the outer wall element a further second hole arrangement which comprises further second holes through which further second holes further fluid is streamable, wherein the further second holes are arranged in a further second areal density,   wherein the further first areal density differs from the further second areal density.   
     
     
         11 . The method according to  claim 10 , wherein the method further comprises:
 streaming the fluid stream through the first hole arrangement and the second hole arrangement,   streaming the further fluid stream through the further first hole arrangement and the further second hole arrangement,   determining a flow parameter of the fluid stream and/or the further fluid stream, and   amending the first areal density, the further first areal density, the second areal density and/or the further second areal density until the measured values of the flow parameter of the fluid stream and/or geometric parameter of the combustion chamber comply with corresponding nominal values of the flow parameter and/or geometric parameter of the combustion chamber.   
     
     
         12 . The combustion chamber according to  claim 7 , wherein the first angle between the first direction and the circumferential direction is between 30° and 60°. 
     
     
         13 . The combustion chamber according to  claim 7 , wherein the further first angle between the further first direction and the circumferential direction is between 30° and 60°. 
     
     
         14 . The combustion chamber according to  claim 8 , wherein the second angle between the second direction and the circumferential direction is between 30° and 60°. 
     
     
         15 . The combustion chamber according to  claim 8 , wherein the further second angle between the further second direction and the circumferential direction is between 30° and 60°.