| 摘要 |
A premixing device (70) includes an air inlet (72), at least one fuel inlet slot (78) having a wall profile (80) configured to form a fuel boundary layer along a portion of a wall of the premixing device, a mixing chamber (74), and at least one diverging fuel injection slot jet (90) disposed inside the at least one fuel inlet slot, the slot jet being configured to create a flow separation region (112) in a diverging portion (110) thereof to generate mixing turbulence at an outlet (94) of the slot jet to aerodynamically enhance a mixing of the fuel from the boundary layer with compressed air without causing a boundary layer flow separation and a flame holding in the mixing chamber. Low-emission combustors, gas turbine combustors, methods for premixing a fuel and an oxidizer in a combustion system, a gas turbine, and a gas to liquid system using the premixing device are also disclosed.
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