Modelling and assessment of compressor faults on marine gas turbines

I. Roumeliotis, N. Aretakis, K. Mathioudakis, E. A. Yfantis

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Any prime mover exhibits the effects of wear and tear over time, especially when operating in a hostile environment. Marine gas turbines operation in the hostile marine environment results in the degradation of their performance characteristics. A method for predicting the effects of common compressor degradation mechanisms on the engine operation and performance by exploiting the "zooming" feature of current performance modelling techniques is presented. Specifically a 0D engine performance model is coupled with a higher fidelity compressor model which is based on the "stage stacking" method. In this way the compressor faults can be simulated in a physical meaningful way and the overall engine performance and off design operation of a faulty engine can be predicted. The method is applied to the case of a twin shaft engine, a configuration that is commonly used for marine propulsion. In the case of marine propulsion the operating profile includes a large portion of off-design operation, thus in order to assess the engine's faults effects, the engine operation should be examined with respect to the marine vessel's operation. For this reason, the engine performance model is coupled to a marine vessel's mission model that evaluates the prime mover's operating conditions. In this way the effect of a faulty engine on vessels' mission parameters like overall fuel consumption, maximum speed, pollutant emissions and mission duration can be quantified.

Original languageEnglish
Title of host publicationASME Turbo Expo 2012
Subtitle of host publicationTurbine Technical Conference and Exposition, GT 2012
Pages375-386
Number of pages12
DOIs
Publication statusPublished - 2012
Externally publishedYes
EventASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012 - Copenhagen, Denmark
Duration: 11 Jun 201215 Jun 2012

Publication series

NameProceedings of the ASME Turbo Expo
Volume5

Conference

ConferenceASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012
Country/TerritoryDenmark
CityCopenhagen
Period11/06/1215/06/12

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