In order to improve the aerodynamic performance of the intake volute of heavy-duty gas turbine

ANSYS FLUENT2022 software is used to simulate the airflow in the intake volute. Firstly

the influence of the contraction section of the original structure on the aerodynamic performance is calculated and analyzed

and then a Bezier curve is proposed as the shape of the contraction section of the intake volute

and the influence of different Bezier curve parameters on the aerodynamic performance is investigated. The calculation and analysis are mainly based on the mean velocity inhomogeneity and total pressure distortion parameters of the outlet cross-section to evaluate the structural advantages and disadvantages

and the inlet velocity of 25.91m/s

temperature of 16°

and turbulence intensity of 2.18% are used as the boundary conditions for the calculations. It is concluded that the vortex areas are significantly reduced in the improved structure compared to the original structure

the average velocity inhomogeneity is reduced by 54.62%

and the total pressure distortion parameter is reduced by 43.02%.