Modeling Ignition and Combustion in Spark-Ignition Engines Based on Swept-Volume Method University of Wisconsin Madison

Format:

Conference/Event

Author/Creator:

Zhu, Zhu, author.

Contributor:

Pattabiraman, Krishna

Perini, Federico

Rutland, Christopher

Conference Name:

WCX World Congress Experience (2018-04-10 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2018

Summary:

AbstractA swept-volume method of calculating the volume swept by the flame during each time step is developed and used to improve the calculation of fuel reaction rates. The improved reaction rates have been applied to theignition model and coupled with the level set G-equation combustion model. In the ignition model, a single initialkernelis formed after which the kernel is convected by the gas flow and its growth rate is determined by the flame speed and thermal expansion due to the energy transfer from the electrical circuit. The predicted ignition kernel size was compared with the available experimental data and good agreements were achieved. Once the ignition kernel reaches a size when the fully turbulent flame is developed, theG-equation model is switched on to track the mean turbulent flame front propagation. Moreover, the models were alsoapplied to a homogeneous propane-fueled TCC3 engine and compared with the model whose reaction rate calculations are not based on the swept-volume algorithm. Better agreements with experimental cylinder pressure and heatrelease rate were obtained compared with the model without coupling with the swept-volume algorithm. The models were implemented and tested in the open source software OpenFOAM

Notes:

Vendor supplied data

Publisher Number:

2018-01-0188

Access Restriction:

Restricted for use by site license