Research On Simulation Of Aero-Engine

Designing and developing new aerospace propulsion systems is time-consuming and expensive. Computational simulation is a promising means for alleviating this cost, which had been identified by the global aeronautical engineering world. The development of computer simulation makes the simulation model of aeroengine more complex and more functional. Procedural-based programming structures and data encapsulation had been not adapted to the development of aeroengine simulation. The implementation of advanced OO (Objected-Oriented) approach makes the aeroengine models have more reasonable structure and more flexible extension ability. In this paper, a thermodynamic engine performance model using Object-Oriented approach and the convergence arithmetic of nonlinear equations is discussed. A steady-state and transient aerothermal model of aeroengine is built up. The solver of iterated algorithm implements the modified Newton-Raphson method with global superlinear convergence and Broyden's method to keep sure that the nonlinear equations are quickly convergent.