Integration of System and Detailed CFD Models for IC Engine Applications Available to Purchase

Stringent IC engine tailpipe emission regulations are being enforced worldwide. To meet the emission norms various emission reduction strategies are explored in conjunction with the fuel consumption improvements. To achieve these goals, modeling of engine system for combustion and emission plays a major role in minimizing the development cost and time. The successful application of combustion and emission modeling depends on the response, accuracy and run-time of the models being used. System level models are generally used to study and optimize the full IC engine system. These models have low runtime (2–10 mins) but are limited in their ability to describe and respond to the geometry and physics of complex fluid dynamics, combustion and emissions. Detailed CFD models are used for these areas but have long runtimes (8–40 hours). The procedure for developing and calibrating commercially available system and in-cylinder CFD software models are explained. Also the integration of these models to minimize the overall runtimes is described in detail.