Modeling internal combustion engines using the OpenFOAM® library

Program of second Two-day Meeting on Internal Combustion Engine Simulations Using OpenFOAM® Technology.

IJITER, 2017

CFD models have been extensively used to predict the performance of spark ignition (SI) and compression ignition (CI) engines. This paper present numerical investigation of Spark Ignition (SI) engines using an open source Computational Fluid Dynamics (CFD) tool. Opposite to the experimental methods, numerical methods are often less expensive and faster. Investigations on the usage of OpenFOAM, CFD tool has been carried out for the simulation of SI engines using engineFoam solver. The k-ε turbulence model is be used along with the Reynolds Averaged Navier Stokes (RANS) equations for simulating the work. Cylinder and cylinder head geometries and meshing needed for combustion chamber Mesh was created using blockMesh of OpenFOAM. Comparison of average cylinder pressure, velocity and temperature for different Crank Angles (CA) from −180 to 60 was done with the existing kivaTest. The temperature contours also plotted on a vertical plane inside the cylinder to indicate the rise in temperature due to combustion.

Summary This work illustrates the current research activities carried out by the authors by developing OpenFOAM applications in the field of IC engine simulation: steady flow analysis, gas exchange modeling, diesel combustion, 1D-3D simulations to model the unsteady gas motion in complex intake and exhaust systems. A first use of the code which has a significant interest in the IC engines industrial applications is the evaluation of the flow coefficients of intake and exhaust ports or other complex geometry devices. Examples of ...

IJSRD, 2014

As growing capacity of the computational techniques, multi-dimensional Computational Fluid Dynamics (CFD) has found more and more applications in diesel engine research, design and development. It is proved by the practice that the reliability of using multi-dimensional CFD tools to assist in IC engine research, design and development. By using CFD tools optimally it is easy to forecast and analyses various details that are technically difficult like in cylinder process of fuel combustion, temperature & pressure contours, emission etc. prior to experimental tests to reduce the number of investigated parameters as well as time and thus costs. A multidimensional model was created and analysis of combustion was done using FLUENT, ANSYS 14.5 packages and the 2D geometry was modeled and meshed using GAMBIT 2.4.6.

Abstract CFD simulation of the combustion process is very important for a correct prediction of both engine performance and pollutant emissions such as soot and NOx. However, combustion modeling involves many complex phenomena that need to be handled in detail. Among them, the most important ones are represented by initial flame kernel formation, flame propagation, fuel oxidation and turbulencechemistry interaction.

Chemistry and Technology of Fuels and Oils, 2000

Improving internal combustion engines (ICE) and increasing the quality of operation are linked with the necessity of maximally increasing the degree of compression. For ICE with spark ignition (otto cycle), the possibilities for such an increase are limited by “knock,” a complex, incompletely investigated phenomenon.

IEEE Control Systems Magazine

Energy, Environment, and Sustainability, 2021

This paper details the use of the Modelica modeling language for the simulation of engine systems. The first part of the paper briefly outlines some of the challenging, multi-domain components of engine system modeling and is followed by a discussion of some of the connectors, interfaces, and model templates that enable robust, efficient model development. The remainder of the paper presents selected modeling examples with particular attention to the structure and implementation of the models that promotes model flexibility and re-use.