STAR-CCM+

Impact of wall heat transfer on engine behavior

The effect of thermal wall functions is discussed in terms of engine thermal balance, thermal state characterization and impact on engine performance. In particular, the newly implemented GruMo-UniMORE wall function is applied to improve the prediction of knock limit in SI engines and combustion behavior in CI engines.

In-cylinder simulation in STAR-CCM+

An updated road map of in-cylinder migration from STAR-CD® into STAR-CCM+® will be presented. Material will include the current status of migration activities, upcoming critical events, and a demonstration of the latest version of the upcoming add-on for setting up in-cylinder simulations in STAR-CCM+.

CFD simulation of GDI engine cold start

CFD simulation of cold start under extremely low ambient temperature in the internal combustion engine is very challenging due to both low evaporation and complicated evaporation processes of fuel. The objective of this study was to develop a computational tool to model evaporation processes of a wide range of multi-component fuels in the gasoline engines realistically and accurately. Particular interest was in GDI engine start operation under extremely cold conditions.

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