Fractal Dimension Growth Model for SI Engine Combustion Hitachi, Limited

Format:

Conference/Event

Author/Creator:

Suzuki, Kunihiko, author.

Conference Name:

2004 SAE Fuels & Lubricants Meeting & Exhibition (2004-06-08 : Toulouse, France)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2004

Summary:

Time-resolved continuous images of wrinkling flame front cross-sections were acquired by a laser-light sheet technique in an optically accessible spark ignition engine. The test engine was operated at various engine speeds and compression ratios. The fractal dimension of the curve, D2, was measured in a time series for each cycle. Analysis of the data shows that as the flame propagates the fractal dimension, D2, is close to unity a short time after spark ignition and then increases. Examination of the relationship between the growth rate of the fractal dimension, ΔD2/Δt, and D2 reveals that the higher D2 is, the lower ΔD2/Δt becomes. An Empirical equation for ΔD2/Δt was derived as a function of the ratio of the turbulence intensity to the laminar burning velocity and pressure. This model was tested in an SI engine combustion simulation, and results compared favorably with experimental data

Notes:

Vendor supplied data

Publisher Number:

2004-01-1993

Access Restriction:

Restricted for use by site license