Firebolt vl.O - Coupling of Transient and Steady Engine Performance Models with a High-Fidelity Navier-Stokes Code

摘要

Transient engine operation can have significant impact on the external aerodynamics of a flight vehicle. Engine throttle transients can also produce unsteady flow in the inlet system that may impact the performance and operability of the engine. Currently there is no capability short of flight testing for evaluating the coupled behavior of the engine, inlet, and aircraft. CREATE-A V is developing software products to allow virtual simulation of the coupled engine, inlet, and aircraft system at any point in the life cycle of a flight vehicle. Engine performance models have been successfully coupled with a high-fidelity Navier-Stokes CFD. Both transient and steady-state coupled solutions have been demonstrated. This new capability will serve to improve the fidelity of aircraft numerical simulations and can be used as a design tool or diagnostic technique to improve the quality and reduce the cost of future weapon systems. The new coupled engine model/CFD capability will be available with the release of Kestrel v3.0 scheduled for the spring of 2012.