1-D Modeling of Transient Engine Operations Using Data Generated by a CFD Code Josef Božek Research Center of Engine and Automotive Technology, Czech Technical University

Format:

Conference/Event

Author/Creator:

Macek, Jan, author.

Conference Name:

SAE World Congress & Exhibition (2008-04-14 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2008

Summary:

Transient engine operations are modeled and simulated with a 1-D code (GT Power) using heat release and emission data computed by a 3-D CFD code (Kiva3). During each iteration step of a transient engine simulation, the 1-D code utilizes the 3-D data to interpolate the values for heat release and emissions.The 3-D CFD computations were performed for the compression and combustion stroke of strategically chosen engine operating points considering engine speed, torque and excess air. The 3-D inlet conditions were obtained from the 1-D code, which utilized 3-D heat release data from the previous 1-D unsteady computations. In most cases, only two different sets of 3-D input data are needed to interpolate the transient phase between two engine operating points. This keeps the computation time at a reasonable level.The results are demonstrated on the load response of a generator which is driven by a medium-speed diesel engine.This approach considerably improves the emissions-prediction capability of the 1-D code for transient engine operations, and thus improves the accuracy of standardized road test cycles

Notes:

Vendor supplied data

Publisher Number:

2008-01-0357

Access Restriction:

Restricted for use by site license