The emootion project at the ASME Turbo Expo 2020

This year's edition marked the TRL4 achievement of the emootion technologies, including our progress in dynamic flow control, and the validation of a combined acoustic-RGB optical probe describing the flame.

Please find the replay of our interventions related to the emootion project at the following links:

F. Giuliani, M. Stuetz, N. Paulitsch, L. Andracher. Progress on forcing pulsation for acoustic, thermoacoustic or flow control purpose in a pressurised vessel by means of a siren. In Proceedings of the ASME 2020 Turbo Expo, Virtual Conference, Sept.21-25 2020. GT2020-16015

L. Andracher, F. Giuliani, N. Paulitsch & V. Moosbrugger. Progress on combined optic-acoustic monitoring of combustion in a gas turbine. Proceedings of the ASME 2020 Turbo Expo, Virtual Conference, Sept.21-25 2020. GT2020-16007. 

We wish hereby to acknowledge the FFG (Austrian Research Promotion Agency) and the BMVIT (Austrian Federal Ministry for Transport, Innovation and Technology) for supporting financially the project emootion (FFG / Take Off Call 2016 / contract 861004, 2017-2020).

 

Read more: The emootion project at the ASME Turbo Expo 2020

Combined Optic-Acoustic Monitoring of Combustion in a Gas Turbine (Journal Publication)

A compact, high temperature- and pressure-resistant probe was developed with success in the frame of the FFG / Take Off / emo(o)tion projects. This probe combines acoustic and optical sensors for a better description of the gas turbine combustion, in-situ.

Free-jet study of the CBO4 flame. The RCP probes are situated to the left and to the right of the flame. 

The results of the probe are published in the International Journal of Turbomachinery for Propulsion and Power. The article is open access. The reference is:

Giuliani, F.; Andracher, L.; Moosbrugger, V.; Paulitsch, N.; Hofer, A.
Combined Optic-Acoustic Monitoring of Combustion in a Gas Turbine.
Int. J. Turbomach. Propuls. Power 2020, 5, 15.

Open access: https://doi.org/10.3390/ijtpp5030015

Read more: Combined Optic-Acoustic Monitoring of Combustion in a Gas Turbine (Journal Publication)

Patent AT516424B1: Shake it up !!!

At the occasion of the recent publication on our patent AT516424B1 (link EPO/Espacenet, link Austrian Patent Office, link Google patents), here is a brief overview of the invention.

 

Read more: Patent AT516424B1: Shake it up !!!

Forcing Pulsations by Means of a Siren for Gas Turbine Applications (Journal Publication 2020)

An article summarizing 20 years of experience about CBOne's pulsation Technology and focusing on the very latest developments has been published in the International Journal of Turbomachinery for Propulsion and Power. To this point, we wish to thank the Board of the EVI-GTI Conference for their recommendation for journal publication.

Link to the publication

 

CBOne developed a special actuator, able to generate with precision airflow modulations over the 0-6000 Hz range, with amplitudes achieving up to 150 dB SPL. The article describes into details:

  • The siren technology
  • The generation of a precision airflow modulation, for dynamic sensor calibration purpose
  • The drive of flow dynamics, for laboratory applications
  • The drive of thermoacoustics, for gas turbine applications

Forcing Pulsations by Means of a Siren for Gas Turbine Applications 
by Fabrice Giuliani, Markus Stütz, Nina Paulitsch, and Lukas Andracher. 
Int. J. Turbomach. Propuls. Power 2020, 5(2), 9; https://doi.org/10.3390/ijtpp5020009

Link to the online open-access full-text

S3R: Safe, Smooth, Smart & Reliable Ignition

If Billy Joel did not make it to start the fire, we did! :)

Ignition is a crucial function in thermal systems. One counts on it when one needs it. This is even more true for set-ups where starts and stops are seldom.

Ignition sequence using the S3R tecnology, applied to the AM burner CBO4

As experts in technical combustion, we happen to have a large experience in ignition. Poor ignition can in the worst case provoke a detonation: the combustor has filled with reactants near the stoichiometry, the energy kernel of the ignition happens to be to high and generates unwillingly a deflagration-to-detonation transition. And boom! And at best the combustor is damaged... This cannot happen. One needs to rely 100% on the ignition, for a smooth and well-controlled start.

In the frame of the emo(o)tion projects, we developed an all-rounder ignition device that connects well with this project because it partly relies on an optical-based flame monitoring. The principle is based on a separated, autonomous premixed flame commanded by a remote central. The device can operate under atmospheric or under elevated pressure conditions. The central can be used for protection, where it prevents the main power source from starting as long as the safe start-up conditions are not reunited, exactly like in a rocket launch sequence.

Click here to read more about the S3R ignition specifics.

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