Numerical Simulation of Combustion Behavior of DI Diesel Engine with Conjunction of AMR and Embedding Refinement Strategies

Abstract

Currently, computational fluid dynamics has become an effective supplement to experimentation in the analysis and development of various engineering systems including internal combustion engines. In fact, multi-dimensional modelling of IC engines is less extensive and less time consuming than experimentation. In this aim, CONVERGE code was used to study the combustion behavior in a DI engine with various mesh control techniques including embedding and Adaptive Mesh Refinement (AMR). The simulation covers the compression, spray, combustion and expansion. A single spray plume and 1/6th of the combustion cylinder (60 degrees) is simulated. In light of the simulation results it is extremely recommended to use AMR approach in conjunction with embedding around the nozzle for running engine simulations.