Intake flow modeling in a four stroke diesel using KIVA3Intake flow for a dual intake valved diesel engine is modeled using moving valves and realistic geometries. The objectives are to obtain accurate initial conditions for combustion calculations and to provide a tool for studying intake processes. Global simulation parameters are compared with experimental results and show good agreement. The intake process shows a 30 percent difference in mass flows and average swirl in opposite directions across the two intake valves. The effect of the intake process on the flow field at the end of compression is examined. Modeling the intake flow results in swirl and turbulence characteristics that are quite different from those obtained by conventional methods in which compression stroke initial conditions are assumed.
Document ID
19930064149
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hessel, R. P. (NASA Lewis Research Center Cleveland, OH, United States)
Rutland, C. J. (Wisconsin Univ. Madison, United States)