Nonlinear Dynamic Simulation of Single- and Multispool Core Engines, Part 11: Simulation, Code Validation

Abstract

In order to ensure the capability, accuracy, robustness, and reliability of the computational method discussed in Part I of this article, comprehensive critical performance assessment and validation tests were performed and are presented in Part II. The dynamic behavior of a subject engine is calculated by solving a number of systems of partial differential equations, which describe the unsteady behavior of the individual components. As representatives, three different transient cases with zero-, single-, and multispool thrust and power-generation engines were simulated. The transient cases range from operating with a prescribed fuel schedule, to extreme load changes, to generator and turbine shutdown.