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Risultati finali
A public website will be created to allow dissemination and communication activities to be performed towards the general public
This deliverable includes preliminary comparative analysis of existing benchmark problems for nonreactive and reactive conditions characterized by a flowgeometry complexity similar to the present model combustion chamber
Completed design, fabrication, and commissioning of premixed, partially premixed, and non-premixed LSB. (si apre in una nuova finestra)This deliverable details the design fabrication and delivering of LSB test bench for different kinds of configurations premixed partially premixed and non premixed flames
Experimental data set from lab scale test campaign (si apre in una nuova finestra)A lab scale experiment will be devised and performed to characterise H2air flame at atmospheric conditions Advanced diagnostics will be applied to derive a data set for validating CFD methods
Conception of the injection systems and the high-pressure burner (si apre in una nuova finestra)An adaptation of an available high-pressure burner will be performed for implementing the new injection systems. The injection systems will be assimilated to alternative-wedge struts which can generate streamwise vortices for fuel/air mixing enhancement. Several kinds of architectures will be examined to study the effects of the streamwise vortex arrangements such as vortex strength, counter or co-rotating vortex arrangement on the mixing characteristics as well as the combustion efficiency. For the experiments, each strut could generate several vortices (up to 8) in a spanwise row configuration. Gaseous Hydrogen will be injected parallel to the mainstream direction directly in the core region of each streamwise vortex through a series of small orifices. The injection system will be mounted in a water-steel pressure housing with four optical accesses. Pressure will be adjusted between 0.1 to 0.4 MPa.
Emission index of several flames of interest (si apre in una nuova finestra)The deliverable reports quantitative measurements of NO in several hydrogen-air flames by usig advanced diagnostics. These diagnostics will be used to analyse the NOx formation processes.
Data management plan (si apre in una nuova finestra)Plan detailing data management procedures to be followed by all partners, relevance of data with and limitation to the research purposes of the project, description of the technical and organisational measures implemented to safeguard the rights and freedoms of the data subjects/research participants. (Linked with all projects tasks but especially task 4.2)
Hydrogen injector design definition (si apre in una nuova finestra)Adaptation of a RQL injector for H2 an existing combustor (developed for kerosene) and optimized for H2 combustion. The focus on the CFD based studies will be on NOx emissions and stability. The study will also focus on lean burn systems without dilution ports. It is expected that due to the very short ignition delays times, it is not possible to premix H2 with air, so concepts have to be developed where the mixing of fuel and air takes place within the combustion chamber. A possible concept is FLOX, where air and fuel are injected with high velocity leading to high mixing rates and the high velocities to prevent immediate combustion.
Set-up of online community engagement tool (si apre in una nuova finestra)A dedicated sharepoint (or equivalent) area will be set up so that members of the HESTIA advisory Board will have access to documentation and data specifically tailored to them.
Pubblicazioni
Autori:
Treleaven, Nicholas; Fournier, Guillaume; Leparoux, Julien; Mercier, Renaud
Pubblicato in:
Volume 3B: Combustion, Fuels, and Emissions, 2024, ISSN 7918-8795
Editore:
ASME
DOI:
10.5281/ZENODO.12733416
Autori:
Ankit D. Kumar, James C. Massey, Preethi Rajendram Soundararajan, Isaac Boxx, Nedunchezhian Swaminathan
Pubblicato in:
Physics of Fluids, Numero 37, 2025, ISSN 1070-6631
Editore:
AIP Publishing
DOI:
10.1063/5.0258444
Autori:
Kumar, AD; Massey, JC; Soundararajan, PR; Boxx, I; Swaminathan, N
Pubblicato in:
Physics of Fluids, 2025, ISSN 1070-6631
Editore:
American Institute of Physics
DOI:
10.18154/RWTH-2025-02889
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