Numerical characterization of a novel test bench featuring secondary reactions of methane

Fischer, Lukas; Breda, Paola; Dalshad, Rahand; Pfitzner, Michael

doi:10.1016/j.ast.2021.107203

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…The data of dataset1 was then extracted from a plane just upstream of the location where the fuel injectors would be located. For more details the reader is referred to the related research article [4] .…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Dataset providing boundary conditions of an experimental test bench to numerically investigate flame wall interactions using CFD

et al. 2022

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Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Dataset providing boundary conditions of an experimental test bench to numerically investigate flame wall interactions using CFD

et al. 2022

Self Cite

View full text Add to dashboard Cite

Investigation of reacting fuel jets in hot vitiated crossflow

Dalshad

Sander

Fischer

et al. 2023

Aerospace Science and Technology

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A Large Eddy Simulation Study on Hydrogen Microjets in Hot Vitiated Crossflow

Broumand,

Yun,

Hong

2024

Journal of Engineering for Gas Turbines and Power

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In this paper, the results of a large eddy simulation (LES) study on hydrogen microjets (dj ∼ 0.5 mm) injected into a hot (1600 K) vitiated crossflow at different angles, namely, normal (90 deg) and inclined jet (30 deg), are presented. The goal is to explore the effects of injection angle on coherent turbulent structure formations, flame–vortex interactions, and wall heat flux contributions. The LES identifies the presence of the horseshoe vortex, the shear layer vortices (SLV), and the counter-rotating vortex pair (CVP), along with the shedding of spanwise-symmetry hairpin vortices in both the normal and inclined jets. The structures in the latter, however, appear more convoluted. In the near field, the SLV-induced flow is found to play a key role in the mixing and flame propagation in the windward side of the jet that is stabilized through the auto-ignition process along the front edge of both the normal and inclined jets close to their exits. The flame-shear layer offset phenomenon is also noticed on the windward side of the jets. In the far field, the CVP is found to be the dominating mechanism in the entrainment of the hot vitiated crossflow by the reacting jet and large-scale mixing. Its induced counter-rotating flow field give rises to the flame propagation and the heat and species transfer from the windward to the leeward side of the jet near the injection wall. In the wake region, the combustion and its byproducts persist in closer proximity to the jet exit of the normal case because of the presence of a much stronger recirculation zone behind the jet. Accordingly, higher wall heat fluxes are obtained in this region for the normal jet. The mean wall heat flux values of both the normal and inclined jets decrease and approach each other with moving away from the jet exit in the streamwise direction. The findings indicate that the CVP-induced flow drastically increases heat transfer to the near wall region, resulting in a spanwise-symmetry heat flux profile with double peaks in downstream. The results of the present LES study are compared to the experimental data available in the literature by considering instantaneous hydroxide (OH) fields and mean wall heat fluxes.

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Numerical characterization of a novel test bench featuring secondary reactions of methane

Cited by 3 publications

References 31 publications

Dataset providing boundary conditions of an experimental test bench to numerically investigate flame wall interactions using CFD

Dataset providing boundary conditions of an experimental test bench to numerically investigate flame wall interactions using CFD

Investigation of reacting fuel jets in hot vitiated crossflow

A Large Eddy Simulation Study on Hydrogen Microjets in Hot Vitiated Crossflow

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