Computational fluid dynamics applied to flows in an internal combustion engine

1978 ◽  
Author(s):  
M. GRIFFIN ◽  
R. DIWAKAR ◽  
J. ANDERSON, JR. ◽  
E. JONES
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion

Computational Fluid Dynamics Applied to Three-Dimensional Nonreacting Inviscid Flows in an Internal Combustion Engine

1979 ◽  
Vol 101 (3) ◽  
pp. 367-372 ◽  
Author(s):  
M. D. Griffin ◽  
J. D. Anderson ◽  
E. Jones
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Fluid Dynamic ◽  
Three Dimensional ◽  
Internal Combustion ◽  
Computational Method ◽  
Striking Similarity ◽  
Stroke Cycle

The three-dimensional inviscid flowfield between the face of the piston and the top of the cylinder in a reciprocating internal combustion engine is calculated for a complete four-stroke cycle (intake, compression, power, exhaust). The fluid dynamic aspects are emphasized; combustion is simply modeled by constant-volume heat addition. The computational method is an explicit time-dependent finite-difference solution of the governing fluid dynamic equations. The results show that a well-defined three-dimensional swirling flow pattern is established during the intake stroke, and that this swirl persists throughout the complete four-stroke cycle. Such a flowfield will have direct influence on I.C. engine combustion phenomena. Moreover, the radial distributions of pressure and temperature show a nearly-axisymmetric behavior, while the three-dimensional results in the valve plane show a striking similarity to previous two-dimensional results. The present investigation is the first three-dimensional calculation of the flowfield for all four strokes, and has important implications for future work in the application of computational fluid dynamics to I. C. engine analysis.

Large eddy simulation analysis of the turbulent flow in an optically accessible internal combustion engine using the overset mesh technique

2020 ◽  
pp. 146808741989646
Author(s):  
Federico Rulli ◽  
Alessio Barbato ◽  
Stefano Fontanesi ◽  
Alessandro d’Adamo
Keyword(s):  
Fluid Dynamics ◽  
Large Eddy Simulation ◽  
Internal Combustion Engine ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Mesh Technique

Computational fluid dynamics has become a fundamental tool for the design and development of internal combustion engines. The meshing strategy plays a central role in the computational efficiency, in the management of the moving components of the engine and in the accuracy of results. The overset mesh approach, usually referred to also as chimera grid or composite grid, was rarely applied to the simulation of internal combustion engines, mainly because of the difficulty in adapting the technique to the specific complexities of internal combustion engine flows. The article demonstrates the feasibility and the effectiveness of the overset mesh technique application to internal combustion engines, thanks to a purposely designed meshing approach. In particular, the technique is used to analyze the cycle-to-cycle variability of internal combustion engine flows using large eddy simulation. Fifty large eddy simulation cycles are performed on the well-known TCC-III engine in motored condition. Results are analyzed in terms of tumble center trajectory and using proper orthogonal decomposition to objectively characterize the spatial and temporal evolution of turbulent flow field in internal combustion engines. In particular, an original decomposition method previously applied by the authors to the TCC-III measured flow fields is here extended to computational fluid dynamics results.

scholarly journals Investigation of the Fluid Dynamics of Lubrication in the Gaps of the Gas Distribution Mechanism of the Internal Combustion Engine

2021 ◽  
pp. 34-39
Author(s):  
Alexander Vasilyev ◽  
◽  
Evgenij Ageev ◽  
Keyword(s):  
Fluid Dynamics ◽  
Mathematical Model ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Accurate Determination ◽  
Internal Combustion ◽  
Exhaust Valve ◽  
Gas Distribution ◽  
Engine Exhaust

The method of calculating the fluid dynamics of the lubricant in the gaps is considered on the basis of a generalized mathematical model of the dynamics of the gas distribution mechanism. The results of its use for the drive of the engine exhaust valve are presented. It is shown that the developed methods and algorithms provide a more accurate determination of the dynamic and tribological characteristics of the gas distribution mechanism.

Simulation of Air in the Intake Manifold Flap of an Internal Combustion Engine

2018 ◽  
Vol 880 ◽  
pp. 189-194
Author(s):  
Alexandru Dima ◽  
Alexandru Oprica ◽  
Ana Maria Nicu ◽  
Diana Camelia Staicu ◽  
Ilie Dumitru
Keyword(s):  
Fluid Dynamics ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Intake Manifold ◽  
Cfd Model ◽  
Ansys Software ◽  
Tension Distribution ◽  
Flow Through ◽  
Engine Power

The objective of this study is to analyze and predict the flow through the intake manifold using a computational fluid dynamics program (CFD). The performance of internal combustion engine depends of the intake manifold and its components. Three model of the intake manifold flap was created and analyzed by using the commercially available ANSYS software. The volumetric efficiency which affects the engine power and torque is affected by the flow of air in the intake manifold. These paper reviews the work realized by various researchers in the field of variable intake manifold. The CFD plots offers valuable information’s of the flow field and tension distribution in the various part of intake manifold flap mechanism. The results show that the CFD model can be used as a tool for improve and optimize various part of the intake manifold flap.

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