| Abstract:Due to the differences in test environment, test method, and inlet and outlet boundary conditions between the component
test of the gas turbine intake system and the entire marine propulsion system test, component performance characteristics obtained under
the individual component test conditions do not fully match those obtained under the marine application environment. To solve this
problem, based on the existing component test data and the scaled-down entire marine propulsion system test data, a study of the influence
mechanisms of various factors on component performance characteristics was conducted for each component of the gas turbine intake
system by means of experimental verification and numerical simulation. By analyzing the differences in test rig structure, boundary condi?
tions, and test methods between individual component tests and the environment of the entire marine propulsion system tests, the influence
laws of various factors on the flow characteristics and pressure losses of the intake system components were summarized, and the
components performance characteristics correction methods in the marine application environment, taking into account the multi-factor
coupling influences, were established. The results show that the correction model of the gas turbine intake system is mainly based on factors
such as the intake louver non-uniformity, the intake volute Reynolds number, and the intake wind speed and direction, etc. The corrected
resistance characteristics show good agreement with the simulation under the marine application environment, with correction errors typi?
cally less than 1%, indicating high accuracy. |
