[HTML][HTML] Analysis of turbulent mixing in a methane–oxygen recessed injector for space propulsion

D Martinez-Sanchis, A Sternin, A Jocher, O Haidn - Physics of Fluids, 2023 - pubs.aip.org
Turbulent mixing in a methane–oxygen recessed injector is studied using direct numerical
simulations. The operating point is chosen to be fuel-rich and at high pressure to recreate a …

Correlation of wall heat loss with quenching distance for premixed H2/Air flames during unsteady Flame-Wall interaction

J Zhu, T Zirwes, FC Zhang, ZJ Li, Y Zhang… - Chemical Engineering …, 2024 - Elsevier
Flame-wall interaction (FWI) of a laminar, premixed hydrogen/air flame perturbed by a
pulsating inflow with excitation frequency (f) is investigated using fully resolved simulations …

[HTML][HTML] A numerical study on premixed laminar ammonia/air flames enriched with hydrogen: An analysis on flame–wall interaction

P Tamadonfar, S Karimkashi, T Zirwes, V Vuorinen… - Combustion and …, 2024 - Elsevier
Ammonia (NH 3) has been recognized as a potential carbon-free synthetic fuel of the near
future. To enhance its low reactivity, one practical option is to blend it with hydrogen (H 2). In …

Forced ignition of premixed cool and hot DME/air flames in a laminar counterflow

Y Wang, S Xie, H Böttler, Y Wang, X Chen… - Combustion and …, 2024 - Elsevier
Recently, low-temperature chemistry (LTC) and LTC-induced cool flames have attracted
extensive interest since they can substantially influence the ignition process and accelerate …

[HTML][HTML] The role of thermodiffusion and dimensionality in the formation of cellular instabilities in hydrogen flames

T Zirwes, F Zhang, TL Kaiser, K Oberleithner… - Proceedings of the …, 2024 - Elsevier
Hydrogen is quickly becoming one of the most important fuels for combustion applications.
However, compared to conventional hydro-carbon flames, the high diffusivity of hydrogen …

[HTML][HTML] Effects of injection recess in methane turbulent combustion for space propulsion

D Martinez-Sanchis, A Sternin, O Haidn, A Jocher - Physics of Fluids, 2024 - pubs.aip.org
Direct numerical simulations (DNS) are conducted to analyze the effect of recess in the
mixing and combustion performance of gaseous methane—oxygen injection systems. The …

Can flamelet manifolds capture the interactions of thermo-diffusive instabilities and turbulence in lean hydrogen flames?—An a-priori analysis

H Böttler, D Kaddar, TJP Karpowski, F Ferraro… - International Journal of …, 2024 - Elsevier
Flamelet-based methods are extensively used in modeling turbulent hydrocarbon flames.
However, these models have yet to be established for (lean) premixed hydrogen flames …

Combustion regimes in turbulent non-premixed flames for space propulsion

D Martinez-Sanchis, A Sternin, O Haidn, M Tajmar - Aerospace, 2023 - mdpi.com
Direct numerical simulations of non-premixed fuel-rich methane–oxygen flames at 20 bar
are conducted to investigate the turbulent mixing burning of gaseous propellants in rocket …

Effect of H2 addition on NH3 flame structure and dynamics in a mixing layer

Z Chang, H Wang, K Luo, J Fan - International Journal of Hydrogen Energy, 2024 - Elsevier
Hydrogen addition has been widely used to improve the combustion performance of low-
reactivity fuels such as NH 3. In this study, a series of two-dimensional NH 3/H 2 flames in …

Simulating cross-scale flow dynamics around offshore monopile foundations with a GFD-CFD coupled model

J Pang, J Ge, Y Tao, Q Zhou, Z Zhou - Ocean Engineering, 2024 - Elsevier
Flow dynamics are complex and undergo significant impact from offshore engineering
infrastructures, such as wind turbines, involving interactions across different temporal and …