A comprehensive methodology for computational fluid dynamics combustion modeling of industrial diesel engines

Abstract

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Heavy-Duty Diesel Engine Spray Combustion Processes: Experiments and Numerical Simulations

“…The following sections will discuss the experimental setup with applied optical diagnostic techniques and pressure analysis, followed by the numerical setup to simulate the spray-and combustion processes. Similar to previous studies, due attention is paid to the method of comparison between experiments and simulations to ensure proper validation and to identify similarities and anomalies [4,12].…”

“…Examples of such combustion parameters are the time it takes for the fuel to ignite, called the ignition delay (ID) and the flame lift-off length (FLOL), which is the distance from the injector where the flame stabilizes. Many approaches for simulating high-pressure spray flames are being developed simultaneously at the moment, using different numerical frameworks and different methods of incorporating the interactions between the flow and chemistry [2,9,10,11,12]. A large part of these contributions is focused on validation within the engine combustion network (ECN), a consortium with orchestrated target conditions using nominally similar injection equipment [13].…”

Simulation studies of combustion in a constant-mass variable-volume combustion chamber

“…Lucchini et al [5] presented a comprehensive approach which was developed using an open-source computational fluid dynamics code. In order to minimize the pre-processing time and preserve the accuracy of the results, algorithms for automatic mesh generation of spray-oriented grids were developed and applied to different combustion chamber geometries.…”

Thermo- and Fluid-Dynamic Processes in Direct Injection Engines: THIESEL 2016 Special Issue

“…30 Ma et al 6 develop a non-equilibrium differential wall model based on the evaluation of the more traditional algebraic equilibrium wall functions commonly used in RANS and large eddy simulation (LES) ICE simulations. In the work by Lucchini et al, 7 CFD engine simulations are performed using the Lagrangian approach to describe the spray evolution and detailed chemistry to model the combustion process.…”

“…Hence, much effort is put on the development of reliable spray and combustion models that include detailed kinetics and better turbulence models. [4][5][6][7] One main advantage of computational fluid dynamics (CFD) is that it becomes possible to identify not only the processes that lead to NO x and soot emissions but also those contributing to combustion noise levels. 8 At the same time, experimental studies are still very necessary to provide validation of these models and ensure adequate representation of the phenomena.…”