Issues Related to Spray Combustion Modeling Validation

Published

January 1, 2001

Author(s)

J F. Widmann, Cary Presser

Abstract

Validation of CFD predictions for spray combustion application has been a challenging task due to difficulties in both modeling and experimental measurements. However, validation is considered to be an essential exercise for the success of CFD tools in the devlopment of future combustion systems. This paper describes a benchmark spray combustion database being collected at National Institute of Standards and Technology (NIST) and validation of a commercial CFD code using these data. Swirl-stabilized combustion of methanol at lean operating conditions in the NIST reference spray combustor facility was selected to be the baseline case for which both measurements and predictions were made. Comparison of CFD predictions with experimental data for droplet size, velocity, and spray volume flux is presented. Preliminary results indicate that qualitative agreement between the predictions and data is obtained. But specifying droplet initial conditions for modeling that accurately reflect the laboratory condition is a major issue that needs to be resolved for further improvement. This paper discusses some of the issues associated with validation of a spray combustion model.

Conference Dates

January 8-11, 2001

Conference Location

Undefined

Conference Title

AIAA Aerospace Science Meeting and Exhibit

Pub Type

Conferences

Keywords

benchmark database, computational fluid dynamics, model validation, spray combustion

Citation

Widmann, J. and Presser, C. (2001), Issues Related to Spray Combustion Modeling Validation, AIAA Aerospace Science Meeting and Exhibit, Undefined (Accessed April 19, 2024)