Evaluation of zero-dimensional stochastic reactor modelling for a Diesel engine application

Korsunovs, Aleksandrs; Campean, Felician; Pant, Gaurav; García-Afonso, Óscar; Tunc, Efe

doi:10.1177/1468087419845823

Cited by 7 publications

(12 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By entering the experimental combustion data into Equation ( 6), the heat release profile in the engine can be reconstructed as recommended by many authors using the analysis model [11,14,22]. The evolutions of the heat release profile(s) for an engine speed of 1500 rpm correspond to the load ranges: 25%, 50%, 75% and 100%.…”

Section: Modeling Of Zero-dimensional Thermodynamic Combustionmentioning

confidence: 99%

“…A methodological approach based on the prediction of the ignition delay of diesel engines has been implemented. Hariram et al [14] conducted an investigation, and this experimental and theoretical study addressed the problem related to the effects of beeswax biodiesel mixtures with fossil diesel on combustion parameters. The zero-dimensional thermodynamic model was used as a numerical implementation approach.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental and Simulation of Diesel Engine Fueled with Biodiesel with Variations in Heat Loss Model

et al. 2021

View full text Add to dashboard Cite

This study presents an experimental investigation and thermodynamic 0D modeling of the combustion of a compression-ignition engine, fueled by an alternative fuel based on neem biodiesel (B100) as well as conventional diesel (D100). The study highlights the effects of the engine load at 50%, 75% and 100% and the influence of the heat loss models proposed by Woschni, Eichelberg and Hohenberg on the variation in the cylinder pressure. The study shows that the heat loss through the cylinder wall is more pronounced during diffusion combustion regardless of the nature of the fuels tested and the load range required. The cylinder pressures when using B100 estimated at 89 bars are relatively higher than when using D100, about 3.3% greater under the same experimental conditions. It is also observed that the problem of the high pressure associated with the use of biodiesels in engines can be solved by optimizing the ignition delay. The net heat release rate remains roughly the same when using D100 and B100 at 100% load. At low loads, the D100 heat release rate is higher than B100. The investigation shows how wall heat losses are more pronounced in the diffusion combustion phase, relative to the premix phase, by presenting variations in the curves.

show abstract

Section: Modeling Of Zero-dimensional Thermodynamic Combustionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental and Simulation of Diesel Engine Fueled with Biodiesel with Variations in Heat Loss Model

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Since the zero-dimensional model 29 idealizes the working gas in the cylinder, the gas state satisfies the following equation:…”

Section: Gas State Equationmentioning

confidence: 99%

Influence of gas distribution port parameters on in-cylinder working pressure of Annular Connecting Straight Cylinder Engine

Yang

Cai

et al. 2022

Preprint

View full text Add to dashboard Cite

In this paper, a novel type of Annular Connecting Straight Cylinder Engine (ACSCE) is proposed, and an innovative dynamic position gas distribution system based on airway reuse is designed. Combined with the characteristics of the differential rotation of the rotor cylinder, the thermodynamic model of the air-powered working process for ACSCE is established. The mathematical structure model of the gas distribution system is also described, and the influence of different parameters of the gas distribution port, including the position angle, size and shape, on in-cylinder working pressure of ACSCE are analysed. The simulation and experimental results show that the position angle of the intake and exhaust ports of the Central Valve Shaft (CVS) has a greater impact on incylinder working pressure, while the port size of CVS has a relatively small effect, and the port size of the Rotary Valve (RV) also has a great impact on in-cylinder working pressure, while the port shape has less effect. When the intake port position angle φ z 0 = 78°, the exhaust port position angleφ z 0 ' = 30 o , the intake port size d 1 =10 mm , the exhaust port size d 1 ' =14 mm of CVS and the port size d 2 = 6 mm of RV, the ACSCE can be in correct gas distribution state and work stably.

show abstract

“…12,13 However, accurate HC, CO and soot prediction is still challenging. 16,17 While the PDF-based SRM solvers demonstrate a good compromise between accuracy and computational time 28,29 to predict engine out emissions, the computation time is still high, and not compatible with the real time and transient simulations across multiple drive cycles at the early stage development process. This limitation could be overcome by employing metamodeling techniques, to replace the SRM solver with surrogate models of adequate fidelity and accuracy.…”

Section: Introductionmentioning

confidence: 99%

Validation of a multi-physics simulation platform for engine emissions modelling

Korsunovs

García-Afonso

Campean

et al. 2021

International Journal of Engine Research

Self Cite

View full text Add to dashboard Cite

This paper introduces a comprehensive and systematic Design of Experiments based methodology deployed in conjunction with a multi-physics engine air-path and combustion co-simulation, leading to the development of a global transient simulation capability for engine out NOx emissions. The proposed multi-physics engine simulation framework couples a real-time one-dimensional air flow model with a Probability Density Function based Stochastic Reactor Model that accounts for detailed in-cylinder combustion chemistry to predict combustion emissions. The integration challenge stemming from the different computation complexities and time scales required to ensure adequate fidelity levels across multi-physics simulations was addressed through a comprehensive Design of Experiments methodology to develop a reduction of the slower Stochastic Reactor Model simulation to enable a transient simulation focussed on NOx emissions. The Design of Experiments methodology, based on Optimal Latin Hypercube design experiments, was deployed on the multi-physics engine co-simulation platform and systematically validated against both steady state and transient light-duty Diesel engine test data. The surrogate selection process included the evaluation of a range of metamodels, with Kriging metamodels selected based on both the statistical performance criteria and consideration of physical phenomena trends. The transient validation was carried out on a simulated New European Drive Cycle against the experimental data available, showing good capability to capture transient NOx emission behaviour in terms of trends and values. The significance of the results is that it proves the transient and drive cycle capability of the multi-physics simulation platform, suggesting a promising potential applicability for early powertrain development work focussed on drive cycle emissions.

show abstract

Evaluation of zero-dimensional stochastic reactor modelling for a Diesel engine application

Cited by 7 publications

References 38 publications

Experimental and Simulation of Diesel Engine Fueled with Biodiesel with Variations in Heat Loss Model

Experimental and Simulation of Diesel Engine Fueled with Biodiesel with Variations in Heat Loss Model

Influence of gas distribution port parameters on in-cylinder working pressure of Annular Connecting Straight Cylinder Engine

Validation of a multi-physics simulation platform for engine emissions modelling

Contact Info

Product

Resources

About