Towards Large Eddy Simulation of Spray Combustion in Direct Injection Spark Ignition Engine

Paper #:
  • 2011-01-1884

Published:
  • 2011-08-30
Citation:
Goryntsev, D., Sadiki, A., and Janicka, J., "Towards Large Eddy Simulation of Spray Combustion in Direct Injection Spark Ignition Engine," SAE Technical Paper 2011-01-1884, 2011, https://doi.org/10.4271/2011-01-1884.
Pages:
11
Abstract:
Investigation of unsteady mixing and combustion effects presents a significant interest in the design and optimization of direct injection spark-ignition (DISI) engines. The main attention focused on the analysis of impact of in-cylinder velocity cyclic variations on mixing and combustion processes. For this purpose multi-cycle large eddy simulation (LES) of the flow, mixing and combustion have been done in a realistic four-stroke internal combustion (IC) engine. The LES method has been used to simulate up to 50 consecutive engine cycles. The paper summarizes the main findings regarding cycle-to-cycle variations of in-cylinder velocity flow filed as well as mixing processes. Then the unsteady effects of spray combustion processes are discussed in details.
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