Device and method for testing secondary icing of heterogeneous nucleation ice crystals coated with soot particles on stationary blade of gas compressor

Abstract

The invention relates to a secondary icing test device and method for heterogeneous nucleation ice crystals coated with soot particles on a stationary blade of a gas compressor. The soot particle dispersion liquid container, the liquid atomizer, the dryer, the gas supply unit, the particle size screening instrument, the volatile substance generator and the like are used for generating coated soot particles; the air supply unit, the high-altitude environment chamber and the like are used for simulating the air inlet condition of the aero-engine and the high-altitude environment condition of 7 km or above. The heating system and the gas compressor stationary blade icing test box are used for simulating the temperature rise process of gas flow in the gas compressor and carrying out an ice crystal secondary icing test; the high-speed camera I and the high-speed camera II are respectively used for observing the heterogeneous icing process of the coated soot particles and the secondary icing process of ice crystals on the stationary blade of the gas compressor; and the exhaust system is used for exhausting gas in the high-altitude environment chamber. The device can simulate and observe the heterogeneous icing process of the coated soot particles and the secondary icing process of the ice crystals on the stationary blade of the gas compressor of the aero-engine under the condition of high altitude of more than 7km at lower cost.

Description

technical field [0001] The invention relates to the field of aero-engine icing and anti-icing tests, in particular to a secondary icing test device and method for coating soot particles with heterogeneous nucleation ice crystals on compressor stator blades. Background technique [0002] It is traditionally believed that the icing of aero-engines is caused by supercooled water droplets. Since supercooled water droplets in the atmosphere are basically distributed below 7km, icing caused by supercooled water droplets rarely occurs at altitudes above 7km. However, current research has shown that ice crystals will cause ice crystals to freeze on the compressor stator blades of aero-engines at altitudes above 7km. This icing method is quite different from the icing caused by traditional supercooled water droplets, which seriously affects flight safety. Existing studies have shown that the exhaust gas emitted by aircraft during cruise flight contains volatile substances and soot pa...

AI Technical Summary

Problems solved by technology

China Aviation Development Commercial Aviation Engine Co., Ltd. proposed an icing wind tunnel ice crystal simulation system (CN202120483842.2), which can only generate ice crystals in the wind tunnel, and cannot simulate and observe the coated soot particles in the air above 7km The freezing process of heterogeneous nucleated ice crystals and the secondary

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