Effect of Mixing on Hydrocarbon and Carbon Monoxide Emissions Prediction for Isooctane HCCI Engine Combustion Using a Multi-zone Detailed Kinetics Solver Lawrence Livermore National Laboratory

Format:

Book

Conference/Event

Author/Creator:

Flowers, Daniel, author.

Conference Name:

2003 JSAE/SAE International Spring Fuels and Lubricants Meeting (2003-05-19 : Yokohama, Japan)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2003

Summary:

This research investigates how the handling of mixing and heat transfer in a multi-zone kinetic solver affects the prediction of carbon monoxide and hydrocarbon emissions for simulations of HCCI engine combustion. A detailed kinetics multi-zone model is now more closely coordinated with the KIVA3V computational fluid dynamics code for simulation of the compression and expansion processes. The fluid mechanics is solved with high spatial and temporal resolution (40,000 cells). The chemistry is simulated with high temporal resolution, but low spatial resolution (20 computational zones). This paper presents comparison of simulation results using this enhanced multi-zone model to experimental data from an isooctane HCCI engine. The chemical kinetics part of the simulation is handled using the multi-zone segregated solver method developed previously, but now KIVA3V is used to handle the fluid dynamics (convection, mass diffusion and heat transfer) for the entire compression and expansion processes. The results show that carbon monoxide and hydrocarbon emissions may be greatly influenced by the mixing and heat transfer during expansion. The prediction of HC and CO is significantly improved by inclusion of these effects in the simulation

Notes:

Vendor supplied data

Publisher Number:

2003-01-1821

Access Restriction:

Restricted for use by site license