A Method for Matching Stage Characteristics of Multistage Axial Compressors

Abstract

The invention belongs to the field of compressor performance simulation, and relates to a stage characteristic matching method of a multi-stage axial flow compressor, comprising selecting one-dimensional calculation parameters of stage characteristics; The one-dimensional calculation parameter value of the stage characteristics by position; the one-dimensional calculation parameter value of the stage characteristics of the first stage of the multi-stage axial flow compressor is defined as the inlet condition, and the one-dimensional calculation parameter value of the stage characteristics of the other stages other than the first stage is defined as the inlet Boundary conditions; calculate the single-stage characteristic values ​​of other stages except the first stage, calculate the single-stage characteristic values ​​of the first stage and the combined calculation stage characteristic values ​​of the multi-stage axial compressor; use the combined calculation stage characteristic values ​​and single-stage characteristic values. Draw the stage characteristic analysis curve of each stage of the multistage axial flow compressor; judge the parameter matching between the stages of the multistage axial flow compressor. The stage characteristic matching method designed by the invention can quickly analyze the stage characteristic matching in the design scheme of the multi-stage axial flow compressor, and plays an important role in judging the parameter matching between the compressor stages.

Description

technical field [0001] The invention belongs to the field of compressor performance simulation, relates to a multistage axial flow compressor stage matching design and analysis technology, and in particular relates to a stage characteristic matching method for a multistage axial flow compressor. Background technique [0002] Axial-flow compressor is a component of gas turbine engine that uses high-speed rotating blades to suck in air from the surrounding atmosphere, pressurize it, and then supply it to the combustion chamber. flow compressor. And with the requirements of a new generation of advanced fighter jets with high unit thrust in high power state and low fuel consumption in partial power state, relevant research institutes in advanced aviation countries have carried out the development of engines with Core Driven FanStage (CDFS for short) and design work, and implemented applications in engineering. [0003] CDFS divides the fan components into two parts, the front ...

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Problems solved by technology

[0005] In order to solve the problems of complex, difficult, and low-efficiency analysis and design of inter-stage performance matching of multi-stage axial flow compressors, the present invention discloses a simple, fast, efficient and accurate stage characteristic matching method of multi-stage axial flow compressors , which uses a one-dimensional characteristic calculation program, which can quickly analyze the matching of intermediate characteristics of multi-stage axial flow compressors, and plays an important role in judging the matching of parameters between compressor stages

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