Non-swirl dry low NOx (DLN) combustor

A gas turbine combustor, comprising:

• a combustion chamber;
• a first annular premix fuel manifold disposed upstream of the combustion chamber;
• and
• an annular member concentric with the first annular premix fuel manifold and defining a first venturi shaped air/fuel pre-mix volume between the first annular premix fuel manifold and the annular member, the first venturi shaped pre-mix volume having a throat, the first annular premix fuel manifold including a plurality of pores approximately upstream of the throat;
• and wherein fuel is to be injected from the first annular premix fuel manifold for mixing with air in the first venturi shaped pre-mix volume.

A method of pre-mixing air and fuel for a gas turbine combustor, comprising:

• defining a first venturi shaped pre-mix volume between a first annular premix fuel manifold and an annular member, the first venturi shaped pre-mix volume having a throat;
• and injecting fuel from the first annular premix fuel manifold through a plurality of pores in the first annular premix fuel manifold approximately upstream of the throat;
• and
• mixing the fuel with air in the first venturi shaped pre-mix volume.