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Multidimensional numerical simulations of the reactive fluid flow in an internal combustion engine cylinder are useful in helping engine designers obtain insight into the physical mechanisms governing efficiency and pollutant formation. A comprehensive numerical model for internal combustion engine cylinder simulations that has been developed at Los Alamos is described. The model is currently embodied in a two-dimensional (axisymmetric) computer code called CONCHAS-SPRAY. Work is in progress on a three-dimensional code with the same features.
This book, together with its companion volume Design Techniques for Engine Manifolds - Wave Action Methods for IC Engines, reports the significant developments that have occurred over the last twenty years and shows how mature the calculation of one-dimensional flow has become. In particular, they show how the application of finite volume techniques results in more accurate simulations than the 'traditional' Method of Characteristics and gives the further benefit of more rapid and more robust calculations. CONTENTS INCLUDE: Introduction Governing equations Numerical methods Future developments in modelling unsteady flows in engine manifolds Simple boundaries at pipe ends Intra-pipe boundary conditions Turbocharging components The application of wave action methods to design and analysis of flow in engines.
This book provides design assistance with the actual mechanical design of an engine in which the gas dynamics, fluid mechanics, thermodynamics, and combustion have been optimized so as to provide the required performance characteristics such as power, torque, fuel consumption, or noise emission.