Alstom Technology Limited

Frank Gersbach

Ulrich Robert Steiger

Christian Sommer

A gas turbine is disclosed which includes an annular combustion chamber defined by an inner wall and an outer wall. A stator airfoil row can be defined by an annular inner stator wall and an annular outer stator wall housing a plurality of stator airfoils, and at least a rotor airfoil row defined by an annular inner rotor wall and an annular outer rotor wall housing a plurality of rotor airfoils. A gap is arranged, for example, between at least one of the inner stator wall and the inner combustion chamber wall, and the outer stator wall and the outer combustion chamber wall, upstream of said stator airfoil row. A border of at least one of the inner and outer stator wall facing the gap can be axisymmetric. A zone of at least one of the inner and outer stator wall downstream of the gap and upstream of the stator airfoils can be non-axisymmetric and defines bumps arranged to locally increase the static pressure of a fluid flow passing through said stator airfoil row to increase the uniformity of the static pressure.

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Munich, Georgia

Frank Gersbach