Aero Engines

SFB 1029 (TurbIn), D01

Holistic evaluation and improvement of a gas turbine with periodic pressure-gain combustion

This project is part of the Collaborative Research Centre 1029 „TurbIn“ - Substantial efficiency increase in gas turbines through direct use of coupled unsteady combustion and flow dynamics.

Energy conversion efficiencies of approximately 40% can be achieved in today’s gas turbines by the utilization of various design methods and materials. However, the main part of the primary energy used is still lost in form of heat, thereby producing greenhouse gases. It is common knowledge that after significant improvements in the past only marginal steps can be expected in the future for the classical design of these machines. Hence, only radical changes offer new opportunities. It is the vision of this Collaborative Research Center 1029 “TurbIn - Substantial efficiency increase in gas turbines through direct use of coupled unsteady combustion and flow dynamics” to increase the efficiency of a gas turbine by more than 10% by the exploitation and control of a combination of innovative combustion concepts and unsteady characteristics.

The major contribution to an efficiency increase is expected from a thermodynamically motivated move from a constant-pressure to a constant-volume combustion. This will be done with the more classical pulsed detonation as well as with a new shockless explosion concept. A pulsed combustion, however, will give rise to severe consequences with respect to a stable operation of the compressor or a reliable cooling of the first stages of a turbine, to name just a few challenges. To control these implications flow control methods either passive or in closed loop will be applied. These flow control methods will be built up in such a fashion that they offer an additional increase in efficiency which can even be used in a classical gas turbine as well.

The project “Holistic evaluation and improvement of a gas turbine with periodic pressure-gain combustion” focuses on the thermodynamic evaluation of gas turbine processes that implement pulsating constant-volume combustion. The gas turbine simulation tool GTlab is extend in the scope of the project, which will allow for the full consideration of the non - stationary gas dynamic phenomena, typical for the cycle in question. The affected turbo components as well as the secondary air system are covered at preliminary design level. Thus, the concept of periodic pressure-gain combustion is evaluated in the holistic context of a gas turbine.

Person of contact: M.Sc. Nicolai Neumann

 

Collaborative Research Center 1029 „TurbIn“, Subproject D01, 2016/2021

Administration

Prof. Dr.-Ing.

Dieter Peitsch

Institute of Aeronautics and Astronautics

dieter.peitsch@tu-berlin.de

+49 30 314-22878

+49 30 314-79448

References

2023

Neumann, N.; Peitsch, D.
Holistic Performance Evaluation of a Turbofan Featuring Pressure Gain Combustion for a Short-Range Mission
CEAS Aeronautical Journal, 14 (4)
November 2023
Publisher: Springer
ISSN: 1869-5590

2022

Neumann, N.; Rähse, T.; Stathopoulos, P.; Peitsch, D.
Numerical Analysis of Unsteady Compressor Performance Under Boundary Conditions Caused by Pulsed Detonation Combustion
In King, Rudibert and Peitsch, Dieter, Editor, Active Flow and Combustion Control 2021Volume152fromNotes on Numerical Fluid Mechanics and Multidisciplinary Design, Page 272–287
In King, Rudibert and Peitsch, Dieter, Editor
Publisher: Springer International Publishing, Cham
2022
ISBN
978-3-030-90727-3

2021

Asli, M.; Garan, N.; Neumann, N.; Stathopoulos, P.
A Robust One-Dimensional Approach for the Performance Evaluation of Turbines Driven by Pulsed Detonation Combustion
Energy Conversion and Management, 248 :114784
November 2021
Publisher: Elsevier Ltd.
ISSN: 0196-8904
Neumann, N.; Asli, M.; Garan, N.; Peitsch, D.; Stathopoulos, P.
A Fast Approach for Unsteady Compressor Performance Simulation Under Boundary Condition Caused by Pressure Gain Combustion
Applied Thermal Engineering, 196 :117223
September 2021
Publisher: Elsevier Ltd.
ISSN: 1359-4311
Neumann, N.; Berthold, A.; Haucke, F.; Peitsch, D.; Stathopoulos, P.
Pulsed Impingement Turbine Cooling and its Effect on the Efficiency of Gas Turbines with Pressure Gain Combustion
Volume 143
Publisher: ASME
April 2021

2019

Neumann, N.; Woelki, D.; Peitsch, D.
A Comparison of Steady-State Models for Pressure Gain Combustion in Gas Turbine Performance Simulation
In GPPS, Editor
September 2019
Neumann, N.; Peitsch, D.
Introduction and Validation of a Mean Line Solver for Present and Future Turbomachines
In ISABE, Editor
September 2019
Neumann, N.; Peitsch, D.
Potentials for Pressure Gain Combustion in Advanced Gas Turbine Cycles
Journal of Applied Sciences, 9 (16) :3211
August 2019
Creative Commons Attribution 4.0 International License CC-BY 4.0
Publisher: MDPI
ISSN: 2076-3417