Advanced Capabilities for Gas Turbine Engine Performance Simulations

Abstract

This paper describes the integration of advanced methods such as component zooming and distributed computing, in an object-oriented simulation environment dedicated to gas turbine engine performance modelling. A 1-D compressor stage stacking method is used to demonstrate three approaches for integrating numerical zooming in an engine model. In the first approach a 1-D compressor model produces a compressor map that is then used in the engine model in place of the default one. In the second approach the results of the 1-D analysis are passed to the 0-D component through appropriate ‘zooming’ scalars. In the final approach the 1-D compressor component directly replaces the 0-D one in the engine model. Distributed computing is realized using Web Services technology. The implementation steps for a distributed scenario are presented. The standalone compressor stage stacking method, in the form of a shared library, is placed in a remote site and can be accessed over the internet through a Web Service Operation (server side). An engine simulation is set up containing a 1-D compressor component which acts as the client for the Web Service operation. Future development of the tool’s advanced capabilities is finally discussed.

Experimental and Numerical Investigation of a Compressor Cascade at Highly Negative Incidence

“…5, No. 1 (2011) 27 frequently mentioned within the literature (Kurzke, 1996;Riegler et al, 2000;Alexiou, 2007), multiple benefits can arise from such kinds of studies. Understanding the flow through blades at extremely high incidence enhances the component performance prediction methods but also the whole engine performance simulation for far off-design power settings such as thesub-idle relight transient maneuvers (windmill altitude and quick relights) or groundstarts.…”

Modeling Contra-Rotating Turbomachinery Components for Engine Performance Simulations: The Geared Turbofan With Contra-Rotating Core Case

“…The models of the contrarotating compressor and turbine components are developed in the PROOSIS v2.6.0 simulation environment [48]. This is a standalone, fiexible, and extensible object-oriented tool capable of performing steady-state and transient calculations along with multifidelity, multidisciplinary, and distributed gas turbine engine performance simulations [49]. Different calculation types can be defined, such as mono or multipoint design, off-design, test analyJournai of Engineering for Gas Turbines and Power sis, sensitivity, optimization, deck generation, etc.…”

Synthesis of Flow Simulation Methods for Fast and Accurate Gas Turbine Engine Performance Estimation

“…Turner et al [2] have dealt with gas turbine engine simulation, producing hybrid tools aiming to reduce computational load, while retaining an acceptable accuracy level. Alexiou et al [3], [4], have also been very active in the research field of engine flow simulation Additionally Alan Hale et al [5], have developed hybrid tools for effective gas turbine engine simulation. Finally the author of the current chapter working in conjunction with Cranfield University research team and in particular with Dr. Vasilios Pachidis has contributed substantially to the research field under context [6], [7], [8].…”