Development trend of non-contact measurement technology for turbine engine combustor
According to the development and application of non-contact measurement technology in aero-engine combustor,the advanced optical diagnostic test technology based on laser and other non-contact measurement technologies are reviewed.There are two main types of optically accessible model combustor test pieces:swirl cup optical model combustor and staged combustors combining premixed and diffusion combustor.The design needs to consider the characteristics of the combustor itself and the research and development goals.For aero-engine combustor,the LDV,PIV and HTV technologies are commonly used to measure the flow field velocity.The LDV,PDPA and PLIF/Mie technologies play an important role in the measurement of gas-liquid two-phase flow and atomization characteristics.The CARS,TDLAS,PLIF and SRS technologies are widely used in the measurement of combustor field temperature and component concentration.Other non-contact measurement technologies such as ultrasonic temperature measurement method,radiation temperature measurement method and infrared temperature measurement method can well make up for the defects of optical temperature measurement.The future non-contact measurement technology needs to complement each other according to the requirements and characteristics of the detection object,to better meet the needs of non-contact measurement of the future aeroengine combustor.
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