6 papers · 1 filter
Unified scaling and shape laws for turbulent premixed methane and hydrogen jet flames
Aurora Maffei, Thomas L. Howarth, Marianna Cafiero +4
The scaling of turbulent premixed flames is typically described by correlations derived for unity-Lewis-number fuels. However, their validity for hydrogen (H) remains uncerta…
Flow configuration and pressure effects on turbulent premixed hydrogen jet flames
T. L. Howarth, T. Lehmann, M. Gauding +1
Turbulent lean premixed hydrogen jet flames are simulated using direct numerical simulation employing detailed chemistry in both slot and round configurations at various pressures.…
Role of enthalpy transport in laminar premixed hydrogen flames at atmospheric and elevated pressures
Thomas L. Howarth, Terence Lehmann, Michael Gauding +1
This work discusses the role of diffusive enthalpy transport in relation to the origin of thermodiffusive instability and the resulting enhanced reactivity. Thermodiffusive effects…
Effects of Intrinsic Flame Instabilities on Nitrogen Oxide Formation in Laminar Premixed Ammonia/Hydrogen/Air Flames
Terence Lehmann, Nikita Dimidziev, Thomas L. Howarth +2
This study investigates the characteristics of nitrogen oxide (NO) formation in two-dimensional (2D) laminar premixed ammonia/hydrogen/air flames and the impact of thermodiffusivel…
Three-dimensional numerical investigation of flashback in premixed hydrogen flames within perforated burners
Filippo Fruzza, Hongchao Chu, Rachele Lamioni +3
Predicting flashback represents a pivotal challenge in the development of innovative perforated burners for household appliances, especially for substituting natural gas with hydro…
Influence of adversarial training on super-resolution turbulence reconstruction
Ludovico Nista, Christoph David Karl Schumann, Mathis Bode +4
Supervised super-resolution deep convolutional neural networks (CNNs) have gained significant attention for their potential in reconstructing velocity and scalar fields in turbulen…