Bart Somers
YOU?
Author Swipe
Experimental study of H2 injection strategies in a HD engine: Comparison of PFI and LPDI Open
Stringent CO2 reduction targets and tightening emission regulations have intensified interest in hydrogen internal combustion engines (H2ICEs) as a clean and robust solution for the heavy-duty (HD) sector. This study experimentally compare…
A zero-dimensional global conservation model to determine non-ideal nozzle conditions for gas injections Open
To reduce computation times of simulations involving gas fueled internal combustion engines (ICEs), a model is developed that determines non-ideal nozzle exit conditions to spare expensive simulations of internal injector flows. The model,…
A parametric study of high-pressure direct injections of hydrogen in an argon–oxygen environment by using large-eddy simulation and tabulated chemistry Open
Within the context of a global de-carbonization, hydrogen plays a significant role in the transition to low-carbon activities. In particular, the Argon Power Cycle (APC) is an engine concept that circulates argon in a closed-loop configura…
A Combined 1D/3D Method to Accurately Model Fuel Stratification in an Advanced Combustion Engine Open
For computational fluid dynamic (CFD) modeling of advanced combustion engines, the cylinder is usually considered a closed system in which the initial conditions are estimated based on the experimental data. Most of these approximations hi…
Large-eddy simulation of high-pressure direct injections of hydrogen with tabulated chemistry Open
The unique thermo-physical properties of hydrogen can facilitate the design of a highly efficient internal combustion engine. However, they also introduce additional challenges in modeling the related igniting and burning process. For inst…
Low-temperature combustion analysis of butanol isomer/diesel blends under reduced oxygen conditions in a constant volume combustion chamber Open
Butanol is an attractive biofuel and power resource in the field of power generation, long-haul heavy-duty transportation, and off-road applications. Particularly, when combined with low temperature combustion concepts, the NOx/soot tradeo…
Design of experiments optimized OMEx-diesel blends on a heavy-duty engine − Part 2: Engine performance and exhaust particle analysis with EGR variation Open
In previous work, oxymethylene dimethyl ether (OMEx) fuel blends have demonstrated their potential to achieve low engine-out emissions, complying with Euro V NOx and Euro VI PM regulations. In this subsequent study, further optimization of…
Application of fast pyrolysis bio-oil in a genset engine for combined heat and power generation Open
Fast pyrolysis bio-oil made from biomass residues has promising potential in combined heat and power generation applications. However, the special physicochemical properties of FPBO make its application in engines challenging, and the long…
The impact of oxymethylene dimethyl ether (OMEx)-diesel blends on combustion and soot-reduction characteristics: experimental and kinetic investigations Open
Oxymethylene dimethyl ether (OMEx) is a renewable oxygenated fuel with significant potential to break the traditional soot-NOx trade-off. The combustion and soot-reduction potential of OMEx (x=3-6) and its blends with diesel are investigat…
The impact of exhaust gas recirculation calibration on emissions and efficiency with GTL and GTLB30 fuels on a heavy-duty diesel engine Open
A gas-to-liquid (GTL) fuel and its blend with 30% fatty acid methyl esters (GTLB30), as well as reference diesel have been investigated on a modified single-cylinder heavy-duty compression-ignition engine over a large part of the engine op…
Design of experiments optimized OMEx-diesel blends on a heavy-duty engine − Part 1: Combustion and emissions analysis with EGR and injection timing variation Open
Oxymethylene dimethyl ether (OME) as a renewable E-fuel provides huge potential for simultaneous soot and NOx reduction on heavy-duty engines, but a thorough optimization of combustion and emission characteristics of great interest to achi…
Numerical characterization of high-pressure hydrogen jets for compression–ignition engines applying real gas thermodynamics Open
The development of hydrogen-fueled direct-injection compression–ignition engines requires adequate models that can accurately predict the spatial development and heat release rate of a jet at high pressure. It is found in literature that t…
FGM combustion model performance in a simplified naval engine combustion chamber Open
Present work investigates the performance of the Flamelet Generated Manifold combustion model in a marine-sized combustion chamber within the framework of RANS turbulence modeling using the software OpenFOAM. The dimensions involved, both …
Experimental investigation performance and emission of hydrotreated pyrolysis oil in a heavy-duty engine with EGR Open
Drop-in biofuels can play an important role in the transition from fossil-based fuels to carbon-neutral energy carriers. This work focuses on performance and emission of hydrotreated pyrolysis oil (HPO) for heavy-duty (HD) engines applicat…
Numerical investigation on ignition characterization of high-pressure oxymethylene ether and -dodecane sprays Open
This work investigates the ignition behavior of a high-pressure oxymethylene ether (OMEx) spray, applied to the Engine Combustion Network (ECN) Spray D flame, using large-eddy simulations. The results are compared to available experiments.…
Combustion characteristics of oxymethylene dimethyl ether-diesel blends: An experimental investigation using a constant-volume combustion chamber Open
The combustion characteristics of oxymethylene dimethyl ether (OMEx) and its blends with diesel have been investigated using a multi-hole injector in a constant-volume combustion chamber. The results show OMEx addition can reduce the ignit…
Effects of oxygen enrichment on diesel spray flame soot formation in O2/Ar atmosphere Open
In this study, diesel spray combustion at oxygen-enriched conditions (oxygen volume fraction of 21–70 %) with argon dilution is experimentally investigated in a constant-volume combustion chamber. Optical diagnostics are employed to study …
Large-eddy simulation of dual-fuel spray ignition at varying levels of methane diluted ambient oxidizer using FGM Open
In the current work, the Flamelet Generated Manifold (FGM) method is applied with large-eddy simulation (LES) to investigate the effect of methane on dual-fuel (DF) spray ignition. The diesel surrogate n-dodecane is injected as the so-call…
Combustion and emission characteristics of hydrotreated pyrolysis oil on a heavy-duty engine Open
Second-generation biofuel is promising to be applied in the field of long-haul transportation, aviation, and marine shipping. This work focuses on the ignition behavior, combustion process, and emission characteristics of hydrotreated pyro…