TY  - THES
A1  - Keinz, Jan
T1  - Optimization of a Dry Low NOx Micromix Combustor for an Industrial Gas Turbine Using Hydrogen-Rich Syngas Fuel
Y1  - 2018
N1  - Dissertation submitted for the degree of Doctor of Engineering Sciences and Technology ;
in Cooperation with Aachen university of Applied Sciences, Department Aerospace Technology;
Thesis director: Prof. P. Hendrick;
Thesis co-director: Prof. H. Funke
PB  - Université Libre de Bruxelles - Brussels School of Engineering Aero-Thermo-Mechanics
CY  - Brüssel
ER  - 
TY  - JOUR
A1  - Funke, Harald
A1  - Beckmann, Nils
A1  - Keinz, Jan
A1  - Abanteriba, Sylvester
T1  - Numerical and Experimental Evaluation of a Dual-Fuel Dry-Low-NOx Micromix Combustor for Industrial Gas Turbine Applications
JF  - Journal of Thermal Science and Engineering Applications
Y1  - 2019
U6  - http://dx.doi.org/10.1115/1.4041495
SN  - 19485085
N1  - Paper No: GT2017-64795
VL  - 11
IS  - 1
SP  - 011015
PB  - ASME
CY  - New York
ER  - 
TY  - CHAP
A1  - Funke, Harald
A1  - Beckmann, Nils
A1  - Stefan, Lukas
A1  - Keinz, Jan
T1  - Hydrogen combustor integration study for a medium range aircraft engine using the dry-low NOx “Micromix” combustion principle
T2  - Proceedings of the ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition. Volume 1: Aircraft Engine. Boston, Massachusetts, USA. June 26–30, 2023
N2  - The feasibility study presents results of a hydrogen combustor integration for a Medium-Range aircraft engine using the Dry-Low-NOₓ Micromix combustion principle. Based on a simplified Airbus A320-type flight mission, a thermodynamic performance model of a kerosene and a hydrogen-powered V2530-A5 engine is used to derive the thermodynamic combustor boundary conditions. A new combustor design using the Dry-Low NOx Micromix principle is investigated by slice model CFD simulations of a single Micromix injector for design and off-design operation of the engine. Combustion characteristics show typical Micromix flame shapes and good combustion efficiencies for all flight mission operating points. Nitric oxide emissions are significant below ICAO CAEP/8 limits. For comparison of the Emission Index (EI) for NOₓ emissions between kerosene and hydrogen operation, an energy (kerosene) equivalent Emission Index is used.

A full 15° sector model CFD simulation of the combustion chamber with multiple Micromix injectors including inflow homogenization and dilution and cooling air flows investigates the combustor integration effects, resulting NOₓ emission and radial temperature distributions at the combustor outlet. The results show that the integration of a Micromix hydrogen combustor in actual aircraft engines is feasible and offers, besides CO₂ free combustion, a significant reduction of NOₓ emissions compared to kerosene operation.
KW  - emission index
KW  - nitric oxides
KW  - aircraft engine
KW  - Micromix
KW  - combustion
KW  - hydrogen
Y1  - 2023
SN  - 978-0-7918-8693-9
U6  - http://dx.doi.org/10.1115/GT2023-102370
N1  - Paper No. GT2023-102370, V001T01A022
PB  - ASME
CY  - New York
ER  - 
TY  - JOUR
A1  - Ayed, Anis Haj
A1  - Kusterer, Karsten
A1  - Funke, Harald
A1  - Keinz, Jan
A1  - Bohn, D.
T1  - CFD based exploration of the dry-low-NOx hydrogen micromix combustion technology at increased energy densities
JF  - Propulsion and Power Research
KW  - Micromix combustion
KW  - Hydrogen gas turbine
KW  - Hydrogen combustion
KW  - High hydrogen combustion
KW  - Dry-low-NOx (DLN) combustion
Y1  - 2017
SN  - 2212-540X
U6  - http://dx.doi.org/10.1016/j.jppr.2017.01.005
VL  - 6
IS  - 1
SP  - 15
EP  - 24
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Funke, Harald
A1  - Beckmann, Nils
A1  - Keinz, Jan
A1  - Horikawa, Atsushi
T1  - 30 years of dry low NOx micromix combustor research for hydrogen-rich fuels: an overview of past and present activities
T2  - Proceedings of the ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition, September 21–25, 2020, Virtual, Online. Vol.: 4B: Combustion, Fuels, and Emissions
KW  - Micromix
KW  - Hydrogen
KW  - Fuel-flexibility
KW  - NOx
KW  - Emissions
Y1  - 2021
SN  - 978-0-7918-8413-3
U6  - http://dx.doi.org/10.1115/GT2020-16328
N1  - Paper No. GT2020-16328, V04BT04A069
PB  - American Society of Mechanical Engineers (ASME)
ER  -