Descrizione del progetto
Comprendere le caratteristiche del gas naturale potenziato con l’idrogeno
I combustibili alternativi sono una soluzione richiesta contro l’aumento del degrado ambientale. Il gas naturale potenziato con l’idrogeno viene proposto come un elemento chiave all’interno del processo di decarbonizzazione del gas destinato a edifici residenziali e alla produzione energetica. Tuttavia, la conoscenza relativa alle caratteristiche di combustione turbolenta e di esplosione del gas naturale potenziato con l’idrogeno è limitata, con un conseguente rallentamento della diffusione commerciale. Il progetto HYGAS, finanziato dall’UE, affronterà questa lacuna nella conoscenza facendo progredire la comprensione delle caratteristiche di combustione turbolenta del gas naturale potenziato con l’idrogeno. Il progetto utilizzerà studi numerici combinati a dati sperimentali esistenti e svilupperà un solido metodo di modellazione per la combustione con meccanismi ridotti di reazione chimica per sostenere una combinazione efficace con i modelli di fluidodinamica computazionale.
Obiettivo
The growing crisis of serious environmental degradation necessitates the demand for alternative fuels. Hydrogen-enhanced natural gas is playing an increasingly important role to decarbonize the gas going into people’s homes and for power generation. However, there are substantial knowledge gap concerning the turbulent combustion and explosion characteristics of hydrogen-enhanced natural gas, which makes great challenge in associated combustion systems and safety issues. Such knowledge gaps hinder the progress of wide deployment of Hydrogen-enhanced natural gas to achieve the ambitious target for decarbonization.
The proposed research aims to bridge these knowledge gaps by gaining insight about the turbulent combustion characteristics of hydrogen-enhanced natural gas through numerical studies aided by existing experimental data. The Fellow will develop a robust modelling approach for the combustion of such blended fuel with reduced chemical reaction mechanism to facilitate effective coupling with computational fluid dynamics (CFD) models. The reduced mechanism will be designed to firstly reproduce the fundamental combustion characteristics concerning ignition and laminar flame speed for validation before being implemented in open source CFD code OpenFOAM. The following specific research objectives are set towards achieving this goal:
⁃ Improve detailed kinetic mechanism HP-Mech for hydrogen-enriched natural gas and validate the mechanism with available laminar flame speed, ignition delay time, and species profile, etc. in the literature;
⁃ Develop reduced kinetic mechanism using the PFA method and perform validations through comparison with the predictions of the detailed mechanism;
⁃ Conduct CFD simulations using the newly developed reduced mechanism for small scale scenarios where test data are available for validation;
⁃ Extend CFD simulations to medium and large-scale scenarios for validation as well as applications.
Campo scientifico
Parole chiave
Programma(i)
Argomento(i)
Meccanismo di finanziamento
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)Coordinatore
GU2 7XH Guildford
Regno Unito