CUI Jin-hui,LI Rui-jun,ZENG Qiang,LI Da-wei.Mathematical Model of Core Engine Startup Process based on Identification Method[J].航空发动机,2021,47(5):6-11
Mathematical Model of Core Engine Startup Process based on Identification Method
DOI:
Key Words:core engine  mathematical model  identification method  virtual steady-state  startup  aeroengine
Author NameAffiliationE-mail
CUI Jin-hui,LI Rui-jun,ZENG Qiang,LI Da-wei AECC Shenyang Engine Research InstituteShenyang 110015China cjh66hero@163.com 
Hits: 1424
Download times: 1126
Abstract:In order to improve the calculation accuracy of the mathematical simulation model of the startup process of the aeroengine core engine,the idea of modeling based on identification method was put forward. With the help of the test data of the core engine,the start? up mathematical model of the core engine was established by solving the rotor torque balanced equation and gas torque characteristics equation. In the calculation of gas torque characteristics,the concept of "virtual steady-state" in the process of startup and accelerating was proposed innovatively. The startup process of a core engine was simulated by identification model,and the calculation results of the identifi? cation model were checked by test data. The results show that the identification method can be used to establish the startup mathematical model of the core engine,and the identification model has high calculation accuracy,and the error between the calculation results and the actual test data is less than 2%. Therefore,the identification model can be used as an auxiliary means for the commissioning of the core en? gine. With the improvement of the core engine testing database,the identification model will be further developed and its calculation ability and accuracy will continue to be improved.
View Full Text  View/Add Comment  Download reader