Simulating Combustion

Simulating Combustion

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The numerical simulation of combustion processes in internal combustion engines, including also the formation of pollutants, has become increasingly important in the recent years, and today the simulation of those processes has already become an indispensable tool when - veloping new combustion concepts. While pure thermodynamic models are well-established tools that are in use for the simulation of the transient behavior of complex systems for a long time, the phenomenological models have become more important in the recent years and have also been implemented in these simulation programs. In contrast to this, the thr- dimensional simulation of in-cylinder combustion, i. e. the detailed, integrated and continuous simulation of the process chain injection, mixture formation, ignition, heat release due to combustion and formation of pollutants, has been significantly improved, but there is still a number of challenging problems to solve, regarding for example the exact description of s- processes like the structure of turbulence during combustion as well as the appropriate choice of the numerical grid. While chapter 2 includes a short introduction of functionality and operating modes of internal combustion engines, the basics of kinetic reactions are presented in chapter 3. In chapter 4 the physical and chemical processes taking place in the combustion chamber are described. Ch- ter 5 is about phenomenological multi-zone models, and in chapter 6 the formation of poll- ants is described.Simulation of combustion and pollutant formation for engine-development GA¼nter Merker, Christian Schwarz, Gunnar Stiesch, Frank Otto ... AdC 86 AdC 80 AdC 800 1300 1800 2300 2800 3300 3800 4300 0 20 40 60 80 100 120 0.0 0.5 1.0 1.5 2.0 2.5 Engine speed [rpm] Fig. ... 8.11: Diagram of external exhaust gas recirculation .


Title:Simulating Combustion
Author: Günter Merker, Christian Schwarz, Gunnar Stiesch, Frank Otto
Publisher:Springer Science & Business Media - 2005-12-27
ISBN-13:

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