An air swirler is provided in the head end of a gas turbine combustor such that, when reducing the smoke production, the flame will be stabilized and proper mixing of the combustion air and fuel will occur. The proper amount of swirl and airflow must necessarily be provided. Swirler can divide stream flow into multiple streams to obtain high turbulence inside the combustor for proper mixing of air with fuel and efficient performance in combustion and also swirler is used to stabilize flame by producing high turbulence.