Eccentric chamfer at inlet of branches in a flow channel

1. A gas turbine component, comprising:

an internal flow channel, comprising:

a main channel,

a branch channel in which a first flow direction is perpendicular to a second flow direction of the main channel, the branch channel being defined by a through hole through a wall of the gas turbine component, the through hole being a film cooling hole, or an impingement cooling hole, or a flow receiver hole, and

an inlet opening of the branch channel,

wherein the inlet opening is disposed in a first wall of the main channel and is defined by an edge comprising an upstream edge and a downstream edge,

wherein a chamfer is disposed at the upstream edge, and

wherein the downstream edge is a sharp edge formed by a right angle between a second wall of the branch channel and the first wall.

2. The gas turbine component as claimed in claim 1 , wherein the gas turbine component is a nozzle guide vane or rotor blade and the wall of the gas turbine component is an outer wall of said nozzle guide vane or rotor blade.

3. The gas turbine component as claimed in claim 1 , wherein the chamfer is manufactured by Electrical Discharge Machining, Electro Chemical Machining, or casting.

4. The gas turbine component as claimed in claim 1 , wherein the gas turbine component is implemented as a gas turbine blade or vane, or as a combustor component.

5. The gas turbine component as claimed in claim 1 , wherein the chamfer at the upstream edge has a shape that is eccentric with respect to a longitudinal axis of the branch channel.

6. The gas turbine component as claimed in claim 1 , wherein the inlet opening has a round, elliptic, semicircular, square or rectangular cross section.