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Large Eddy Simulation of Diesel Fuel Injection and Mixing in a HSDI Engine

Research output: Contribution to Journal/MagazineJournal articlepeer-review

<mark>Journal publication date</mark>2011
<mark>Journal</mark>Flow, Turbulence and Combustion
Issue number2-3
Number of pages19
Pages (from-to)473-491
Publication StatusPublished
<mark>Original language</mark>English


The paper aims to assess the performance of large eddy simulation (LES) in predicting the unsteady reacting flows in internal combustion engines. The incompatibility due to the turbulence dissipation was avoided in the k-equation LES formulation. Two versions of the LES have been tested with different filtering. The cell-specific filtering was found to give realistic prediction of the instantaneous temperature and pressure field during the combustion process. The coupling of combustion heat release, temperature field and turbulent flow field was found to be strong in the LES predicted flow and combustion fields which showed wrinkled flame structures. The formulation gives improved agreement with available experimental data.