Work Package 3

Mutual adaptation of turbine fuel and engine technology

WP3 aim to identify combustion chamber concepts suitable for aviation and stationary gas turbines that meet future robustness requirements, use green liquid fuels, and achieve low emissions. A PhD student is involved in this work package, tasked with setting baselines, defining modeling, quantifying fuel effects on spray and flame kinetics in collaboration with WP1, conducting numerical studies of concepts, and selecting promising ones for testing.

Key activities in 2023 included evaluating baseline cases for stationary gas turbine combustion systems, with the CECOST burner identified as the primary baseline due to its relevance to Siemens Energy’s SGT-600, SGT-700, and SGT-800 gas turbines. Improved Computational Fluid Dynamics (CFD) modeling has confirmed the accuracy of predictions compared to earlier measurement data. As part of WP3 activities Siemens Energy has conducted high-pressure combustion tests using alternative green liquid fuels, with modifications to their rig in Berlin allowing for easier fuel exchanges. Tests with RME and methanol were conducted, complementing previous successful tests with Hydrogenated Vegetable Oil (HVO).

For aviation gas turbine systems, a literature study is underway to evaluate baseline options. The FJ44 combustor and the TARS burner (see WP1) have been identified for tests to quantify the effects of different fuels. Experimental and simulation work on the TARS burner has begun in synergy with the MYTHOS project, with further discussions planned with aviation industry partners.

WP3 also includes spray tests to evaluate fuel nozzle performance, essential for understanding the impact of different fuels on spray characteristics and downstream flame. Planning of experimental campaigns involves selecting conditions, nozzles, and fuels for the study.

Figure WP3. (a) Main geometrical elements of the CECOST burner, and a detail of the axial swirler. (b) From left to right: axial velocity, temperature and OH/CH2O distributions (blue and red) for PaSR and EDC in the two halves of the combustion chamber (left and right, respectively). (c) Instantaneous experimental OH* PLIF signal.

Work Package leader

Daniel Lörstad
Work Package leader, WP3, Siemens Energy, Finspång, Sweden
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