An Innovative 3D-CFD-Approach towards Virtual Development of Internal Combustion Engines [electronic resource] /
Chiodi, Marco.author.
In the engine development process, simulation and predictive programs have continuously gained in reliance. Due to the complexity of future internal combustion engines the application of simulation programs towards a reliable “virtual engine development” is a need that represents one of the greatest challenges. Marco Chiodi presents an innovative 3D-CFD-tool, exclusively dedicated and optimized for the simulation of internal combustion engines. Thanks to improved or newly developed 3D-CFD-models for the description of engine processes, this tool ensures an efficient and reliable calculation also by using coarse 3D-CFD-meshes. Based on this approach the CPU-time can be reduced up to a factor 100 in comparison to traditional 3D-CFD-simulations. In addition an integrated and automatic “evaluation tool” establishes a comprehensive analysis of the relevant engine parameters. Due to the capability of a reliable “virtual development” of full-engines, this fast response 3D-CFD-tool makes a major contribution to the engine development process. Südwestmetall-Förderpreis 2010.
Description based upon print version of record.
Acknowledgments; Table of Contents; Abstract; Zusammenfassung; Symbols, Subscripts and Abbreviations; Roman Symbols; Greek Symbols; Subscripts and Abbreviations; 1 Introduction; 1.1 Society and Transportation; 1.2 The Fascination of Internal Combustion Engines; 1.3 Internal Combustion Engines and Sustainable Transportation; 1.3.1 Development Targets of Internal Combustion Engines in the Past; 1.3.2 The Role of Alternative Engine Concepts; 1.3.3 Development Targets of Internal Combustion Engines in the Future; 1.3.3.1 General Improvement of actual Solutions
1.3.3.2 Downsizing and Turbo-Charging1.3.3.3 Hybridization; 1.3.3.4 Development of Innovative Combustion Solutions; 1.3.3.5 Alternative Fuels; 1.4 How to Face the Complexity of Future Internal- Combustion-Engines; 2 Simulation of Internal Combustion Engines; 2.1 Simulation towards Virtual Engine Development; 2.1.1 One Tool for the Simulation of the Entire Engine?; 2.1.1.1 Mechanical Numerical Analysis; 2.1.1.2 Engine Operating Cycle Analyses; 2.1.2 The Future Challenge: an improved Integration of Simulation Tools; 2.2 Today's Repartition of the Resources in Engine Development
2.3 Introduction to Engine Processes Modeling in the Simulation of the Operating Cycle3 Engine Energy- Balance; 3.1 Energy-Balance of the Combustion Chamber; 3.2 Energy-Balance of the Entire Engine; 3.3 The Role of Engine Energy-Balance in the Engine Development Process; 4 Real Working-Process Analysis; 4.1 Introduction; 4.2 Fundamental Equations; 4.3 Thermal State Equation of the Working Fluid; 4.4 Engine Modeling (Engine-Specific Models); 4.4.1 Modeling of the Thermo-Physical Properties of the Working Fluid; 4.4.2 Modeling of the Wall Heat-Transfer; 4.4.3 Modeling of the Combustion Process
4.4.3.1 Empirical Models4.4.3.2 Quasi-dimensional Models; 4.5 Two Approaches in the Calculation of the Real Working-Process; 4.5.1 Pressure Profile Calculation - Combustion Profile Supply; 4.5.2 Combustion Profile Calculation - Pressure Profile Supply; 4.6 The Role of Real Working-Process Analysis in the Engine Development Process; 5 One-Dimensional Simulation (1D-CFD-Simulation); 5.1 Introduction; 5.2 Engine Layout and Conservation Equations; 5.3 The Role of the 1D-CFD-Simulation in the Engine Development Process; 6 Three-Dimensional Simulation (3D-CFD Simulation); 6.1 Fundamental Equations
6.1.1 Mass Conservation Equation6.1.2 Species Mass Conservation Equation; 6.1.3 Momentum Conservation Equation (Navier-Stokes' Equation); 6.1.4 Energy Conservation Equation; 6.2 Engine Modeling; 6.2.1 Universally-Valid 3D-CFD-Models; 6.2.1.1 Modeling of the Thermo-physical Properties of the Working Fluid; 6.2.1.2 Modeling of Non-Convective Processes; 6.2.1.3 Turbulence Modeling; 6.2.1.4 Combustion Models; 6.2.1.5 Wall Heat-Transfer Models; 6.2.2 Introduction to Engine-Specific 3D-CFD-Models; 6.3 Discretization Practices (Numerical Implementation); 6.3.1 Spatial Flux Discretization
6.3.1.1 Low-Order Differencing Scheme - Upwind Differencing (UD)
Includes bibliographical references.
In the engine development process, simulation and predictive programs have continuously gained in reliance. Due to the complexity of future internal combustion engines the application of simulation programs towards a reliable “virtual engine development” is a need that represents one of the greatest challenges. Marco Chiodi presents an innovative 3D-CFD-tool, exclusively dedicated and optimized for the simulation of internal combustion engines. Thanks to improved or newly developed 3D-CFD-models for the description of engine processes, this tool ensures an efficient and reliable calculation also by using coarse 3D-CFD-meshes. Based on this approach the CPU-time can be reduced up to a factor 100 in comparison to traditional 3D-CFD-simulations. In addition an integrated and automatic “evaluation tool” establishes a comprehensive analysis of the relevant engine parameters. Due to the capability of a reliable “virtual development” of full-engines, this fast response 3D-CFD-tool makes a major contribution to the engine development process. Südwestmetall-Förderpreis 2010.
Automotive engineering.
Automotive Engineering.