What function do swirl cups provide to the combustor dome?

Swirl cups play a crucial role in the combustor dome by enhancing flame stabilization and promoting effective mixing of fuel and air. When fuel enters the combustor, it needs to mix thoroughly with the air to ensure complete combustion. The design of swirl cups induces a swirling motion in the fuel-air mixture, which helps to create a more uniform distribution of the fuel and air throughout the combustion zone. This swirling action not only enhances the mixing process but also helps stabilize the flame, allowing for a more efficient and stable combustion process. By ensuring that the fuel is adequately mixed with air, swirl cups contribute to optimal combustion conditions, leading to improved performance and efficiency of the gas turbine system.