Detailed Modelling of Combustion: A Non-Interfering Diagnostic Tool.
Abstract
A major goal of detailed numerical modelling of combustion is to develop computational tools which can be used interactively with laboratory diagnostic techniques to interpret and understand experiments. Only through this quantitative interaction of prediction and measurement can we calibrate convincingly our understanding of the fundamental physical and chemical processes involved. Modelling of flames and detonations is particularly challenging because of the strong feedback between the energy released due to chemical reactions and the evolution of the hydrodynamic flow. Since it is generally not possible to decouple these processes completely, special numerical techniques are required to solve the problems. In this paper, the basic steps and decisions which must be made when constructing and using a numerical model will be discussed. These involve choosing the numerical algorithms based on the physics and chemistry of the problem, testing the model based on these algorithms in different limits against theoretical and analytical results, and using the model interactively with experiments. With the third step specifically in mind, it will be shown how the species concentration, velocity, and temperature profiles obtained from laser probe diagnostics can provide information for use in and comparison with detailed calculations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 19, 1981
- Accession Number
- ADA094896
Entities
People
- Elaine Oran
- Jay Paul Boris
- M. J. Fritts
Organizations
- United States Naval Research Laboratory