A5058795447- Advanced Combustion Engine Technologies
- Catalytic Processes in Materials Science
- Combustion and flame dynamics
- Electrohydrodynamics and Fluid Dynamics
- Cyclone Separators and Fluid Dynamics
- Fluid Dynamics and Heat Transfer
- Ammonia Synthesis and Nitrogen Reduction
- Atmospheric chemistry and aerosols
- Combustion and Detonation Processes
- Coal Combustion and Slurry Processing
- Engineering Applied Research
- Rocket and propulsion systems research
- Vehicle emissions and performance
- Environmental Impact and Sustainability
- Aerosol Filtration and Electrostatic Precipitation
Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique
2021-2024
Université d'Orléans
2021-2024
Using carbon free energy sources is one of the keys to mitigate climate change. Hydrogen promises be these energies, but its storage difficult and expensive. Ammonia, however, interesting as it can store hydrogen safely used in combustion engines instead hydrocarbon fuels. In this experimental work, spray characteristics ammonia under different air densities temperatures were investigated constant volume compared a biofuel, ethanol, common fuel, gasoline. The Schlieren technique was capture...
Blending bio-ethanol with ammonia is an interesting approach to reach carbon-neutrally combustion systems. As a fundamental parameter, laminar flame speed for different blends of ethanol/ammonia explored using the spherical expanding technique under constant pressure conditions. A comparison few recent literature experimental results proposed. An empirical correlation developed estimate any ammonia/ethanol mixture as function equivalence ratio at 1 bar and 423 K. Some simulation are also...
Combustion and emissions characteristics of a spark-ignition engine using direct injection ethanol blended with ammonia also pure were investigated in this study. The experiments conducted five different fuel compositions ethanol/ammonia (C 2 H 5 OH/NH 3 ): 100/0, 75/25, 50/50, 25/75, 0/100. Two strategies to reach homogenous or stratified conditions three intake pressures, 0.5, 1.0, 1.5 bar corresponding 2.8, 7.9, 12 IMEP. performances the pollutants are compared as function at identical...
<div class="section abstract"><div class="htmlview paragraph">The goal of mitigating climate change has driven research to the use carbon-free energy sources. In this regards, green hydrogen appears as one best options, however, its storage remains difficult and expensive. Indeed, there is room consider ammonia (an efficient carrier) directly a fuel for internal combustion engines or gas turbines. Currently, are very few works in literature describing liquid sprays, both from...
With the aim of expanding knowledge on liquid ammonia sprays, this paper investigates injection process through Computational Fluid Dynamics (CFD) using Lagrangian particle method, within Reynolds Averaged Navier Stokes (RANS) approach for turbulence modeling. Numerical results and experimental data are compared in terms vapor tip penetration, local values Sauter Mean Diameter (SMD) global spray morphology. This model validation allows to build a predictive simulation framework injection. In...
Simulations of liquid ammonia spray are performed for different ambient pressures to investigate the transition between flash-boiling and non-flashing regimes, through Computational Fluid Dynamics (CFD). The Lagrangian particle method, within Reynolds Averaged Navier Stokes (RANS) approach turbulence is used. Numerical results compared with experimental vapor tip penetrations, morphology Sauter Mean Diameter (SMD) measurements, a multi-hole injector. An adaptation Kelvin-Helmholtz -...
Climate change and other environmental impacts have been an enormous worldwide concern in recent decades. Decarbonizing strategic economic industries is mandatory. Using carbon-free fuels such as ammonia (NH3) has promoted a promising solution for decarbonizing both energy industrial sectors. The use of biofuels also encouraged attractive alternative to replace conventional petroleum-based transportation. Therefore, the present study evaluates profile using ammonia-ethanol blends internal...
The simulation of liquid ammonia spray are performed for different ambient pressures to investigate the transition between flash-boiling and non-flashing regimes, through Computational Fluid Dynamics (CFD). Lagrangian particle method, within Reynolds Averaged Navier Stokes (RANS) approach turbulence is used. Numerical results compared with experimental vapor tip penetrations, morphology Sauter Mean Diameter (SMD) measurements, a multi-hole injector. An adaptation Kelvin-Helmholtz -...