The Importance of High-Frequency, Small-Eddy Turbulence in Spark Ignited, Premixed Engine Combustion 952409
The different roles played by small and large eddies in engine combustion were studied. Experiments compared natural gas combustion in a converted, single cylinder Volvo TD 102 engine and in a 125 mm cubical cell. Turbulence is used to enhance flame growth, ideally giving better efficiency and reduced cyclic variation. Both engine and test cell results showed that flame growth rate correlated best with the level of high frequency, small eddy turbulence. The more effective, small eddy turbulence also tended to lower cyclic variations. Large scales and bulk flows convected the flame relative to cool surfaces and were most important to the initial flame kernel.
Citation: Ting, D., Checkel, M., and Johansson, B., "The Importance of High-Frequency, Small-Eddy Turbulence in Spark Ignited, Premixed Engine Combustion," SAE Technical Paper 952409, 1995, https://doi.org/10.4271/952409. Download Citation
David S-K. Ting, M. David Checkel, Bengt Johansson
University of Alberta, Lund Institute of Technology
1995 SAE International Fall Fuels and Lubricants Meeting and Exhibition