Numerical simulation of side intake flow of a gas turbine

Abstract

[Objectives] This paper studies the influence of wind direction on the stability,evenness and loss of flow resistance of the side intake flow of a gas turbine.[Methods] CFX is applied to make numerical simulation of the intake flow of the gas turbine. Through setting of the intake angle and comparison of the flow line distribution of the intake system under different intake status,the total pressure distribution of the fore intake louver,the side intake louver and the outlet of the intake system,and the cross-sectional velocity distribution of the fore and side intake filters,the intake evenness of the gas turbine with intake flow in different directions is studied.[Results] It is shown that,the mixing intensity of fore and side intake air varies with the intake angle. Thanks to the intake system,the unevenness of air flow due to difference between fore and side intake angles is greatly improved after the air flows through the intake pressure stabilizing chamber,making the downstream airflow more even.[Conclusions] The findings are meaningful for guiding the design of the side intake system of the gas turbine.

Keywords

• gas turbine
• intake system
• side intake
• intake louver
• filter