Selected Papers from the 10th EVI-GTI International Conference on Gas Turbine Instrumentation

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Guest Editor
Siemens Energy, 10553 Berlin, Germany
Interests: testing and validation; test rig and test facility planning; instrumentation and probes; data acquisition; exhaust emission measurements (CEMS)
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General Electric GmbH, 5400 Baden, Switzerland
Interests: sensors; probes and instrumentation systems for harsh environments; signal processing; validation testing
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Guest Editor
Siemens Energy AB, 612083 Finspång, Sweden
Interests: measurement methods in turbomachinery; turbomachinery instrumentation; temperature measurement; measurement uncertainty

Special Issue Information

Dear Colleagues,

The European Virtual Institute for Gas Turbine Instrumentation (EVI-GTI) was founded in 2002 through the European Union’s Competitive and Sustainable Growth (GROWTH) program. Since 2005, the EVI-GTI has been a non-profit association. The Board, the membership, and the attendees represent basically all European turbomachinery OEMs, a broad variety of sensor and instrumentation vendors, and many universities and research institutes. There are more than 200 registered members of the EVI-GTI community. EVI-GTI is the largest association for gas turbine instrumentation in Europe.

EVI-GTI aims to facilitate improvements in Gas Turbine Instrumentation technology for control, monitoring, and testing by sharing OEM and user requirements and emerging solutions from the research sector and supply chain businesses. You can find our vision here.

EVI-GTI has, together with the Propulsion Instrumentation Working Group (PIWG) in the U.S., developed the Instrumentation Lap Gap Matrix (LGM) by analyzing the technology readiness of various technologies for sensors, probes, and instrumentation. The LGM shows which technologies are currently satisfactory, which are currently not available but can be worked around, and which are not available today and prevent the further development of gas turbine engines (e.g., to higher efficiencies).

The EVI-GTI International Gas Turbine Instrumentation Conference is an event that started in 2004, initially being a yearly conference in Europe. From 2006 onwards, it was organized every two years. Every other year, there is a transatlantic Joint EVI-GTI/PIWG Conference which takes place alternately in the U.S. and in Europe. The EVI-GTI Conferences are focused on promoting and disseminating new developments, and therefore presenters need to submit only a technical presentation rather than a full paper.

Since 2019, EVI-GTI has also been associated with EUROTURBO and has published its first Special Issue in the International Journal for Turbomachinery Propulsion and Power embodying the best papers from the 9th EVI-GTI Conference in Graz, Austria.

In 2022, EUROTURBO and EVI-GTI agreed to hold their biennial conferences together under the ETC event with a separate session for EVI-GTI. As the first joint event, the 10th EVI-GTI International Gas Turbine Instrumentation Conference was held together with the 15th European Turbomachinery Conference in Budapest, Hungary, on 24-28 April 2023. For this 10th conference, EVI-GTI provides the opportunity for selected contributions to be peer reviewed and published in a dedicated Special Issue to appear in the IJTTP.

The 10th EVI-GTI Conference was structured into five sessions that covered topics related to instrumentation and measurement in (hot) engine parts.

The sessions were as follows:

  • New Sensors Developments I-III;
  • Engine Validation Instrumentation and Testing;
  • Optical Methods I-II;
  • Test Facilities;
  • Test Facilities and Validation Measurement I-II.

Aside from the presentations and the key notes, “elevator pitch” sessions were held where the participants could introduce their work within 4 minutes without a formal presentation.

Almost 30 technical presentations were given, either as “presentation only” or as full-paper contributions. The best papers from the conference, corresponding to the IJTPP scope, are collected in this Special Issue.

EVI-GTI Website: https://evi-gti.eu

EVI-GTI Wiki Site: https//wiki.evi-gti.eu

Dr. Ralf Obertacke
Pete Loftus
Dr. Hanspeter Zinn
Dr. Björn Karlsson
Guest Editors

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Keywords

  • EVI-GTI
  • turbomachinery
  • gas turbine
  • compressor
  • combustor
  • sensors and instrumentation
  • calibration
  • data acquisition and data processing
  • standards and specification
  • test cells and test rigs
  • validation and measurement
  • hot gas path
  • gas turbine health monitoring

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Published Papers (3 papers)

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Research

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12 pages, 6000 KiB  
Article
Development and Design Validation of an Inflow-Settling Chamber for Turbomachinery Test-Benches
by Michael Henke, Stefan Gärling, Lena Junge, Lars Wein and Hans-Ulrich Fleige
Int. J. Turbomach. Propuls. Power 2024, 9(4), 31; https://doi.org/10.3390/ijtpp9040031 - 24 Sep 2024
Viewed by 535
Abstract
At Leibniz University of Hannover, Germany, a new turbomachinery test facility has been built over the last few years. A major part of this facility is a new 6 MW compressor station, which is connected to a large piping system, both designed and [...] Read more.
At Leibniz University of Hannover, Germany, a new turbomachinery test facility has been built over the last few years. A major part of this facility is a new 6 MW compressor station, which is connected to a large piping system, both designed and built by AERZEN. This system provides air supply to several wind tunnel and turbomachinery test rigs, e.g., axial turbines and axial compressors. These test rigs are designed to conduct high-quality aerodynamic, aeroelastic, and aeroacoustic measurements to increase physical understanding of steady and unsteady effects in turbomachines. One primary purpose of these investigations is the validation of aerodynamic and aeroacoustic numerical methods. To provide precise boundary conditions for the validation process, extremely high homogeneity of the inflow to the investigated experimental setup is imminent. Thus, customized settling chambers have been developed using analytical and numerical design methods. The authors have chosen to follow basic aerodynamic design steps, using analytical assumptions for the inlet section, the “mixing” area of a settling chamber, and the outlet nozzle in combination with state-of-the-art numerical investigations. In early 2020, the first settling chamber was brought into operation for the acceptance tests. In order to collect high-resolution flow field data during the tests, Leibniz University and AERZEN have designed a unique measurement device for robust and fast in-line flow field measurements. For this measurement device, total pressure and total-temperature rake probes, as well as traversing multi-hole probes, have been used in combination to receive high-resolution flow field data at the outlet section of the settling chamber. The paper provides information about the design process of the settling chamber, the developed measurement device, and measurement data gained from the acceptance tests. Full article
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14 pages, 3897 KiB  
Article
Heat Load Development and Heat Map Sensitivity Analysis for Civil Aero-Engines
by Alireza Ebrahimi, Soheil Jafari and Theoklis Nikolaidis
Int. J. Turbomach. Propuls. Power 2024, 9(3), 25; https://doi.org/10.3390/ijtpp9030025 - 2 Jul 2024
Viewed by 1271
Abstract
The design complexity of the new generation of civil aero-engines results in higher demands on engines’ components, higher component temperatures, higher heat generation, and, finally, critical thermal management issues. This paper will propose a methodological approach to creating physics-based models for heat loads [...] Read more.
The design complexity of the new generation of civil aero-engines results in higher demands on engines’ components, higher component temperatures, higher heat generation, and, finally, critical thermal management issues. This paper will propose a methodological approach to creating physics-based models for heat loads developed by sources, as well as a systematic sensitivity analysis to identify the effects of design parameters on the thermal behavior of civil aero-engines. The ranges and levels of heat loads generated by heat sources (e.g., accessory gearbox, bearing, pumps, etc.) and the heat absorption capacity of heat sinks (e.g., engine fuel, oil, and air) are discussed systematically. The practical research challenges for thermal management system design and development for the new and next generation of turbofan engines will then be addressed through a sensitivity analysis of the heat load values as well as the heat sink flow rates. The potential solutions for thermal performance enhancements of propulsion systems will be proposed and discussed accordingly. Full article
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Other

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9 pages, 2124 KiB  
Technical Note
Verification of the Gage Factor of a High-Temperature Strain Gage for the Dynamic Testing of Gas Turbines
by Oleksii Podobied, Ihor Vernyhora and Oleksii Kulikov
Int. J. Turbomach. Propuls. Power 2024, 9(3), 30; https://doi.org/10.3390/ijtpp9030030 - 20 Sep 2024
Viewed by 802
Abstract
This paper presents an analysis of factors causing the change in the real gage factor of high-temperature strain gages installed with ceramic cements. A calibration tool to mimic the load on the strain gage during the testing of gas turbines and to determine [...] Read more.
This paper presents an analysis of factors causing the change in the real gage factor of high-temperature strain gages installed with ceramic cements. A calibration tool to mimic the load on the strain gage during the testing of gas turbines and to determine the real gage factor is described. Calibration data obtained for two samples of nickel–chromium strain gages and two samples of iron–chromium–aluminum strain gages are given and analyzed. Full article
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