Turbulent Spray Combustion Modeling for Rocket Engine Applications
Abstract
The paper concerns the modeling of turbulent liquid oxygen/hydrogen spray combustion for elevated subcritical pressure and cryogenic inlet temperature conditions. Various approaches are outlined and discussed that concern current and future models for turbulent two-phase flows as well as models to include detailed chemical reactions. The presence of the liquid phase complicates the situation since the turbulence and the chemical reactions not only interact with each other but also with the spray processes. After the presentation and discussion of general approaches, the combustion in a single injector combustion chamber is modeled where experimental data are available for gas phase temperature and both droplet size and velocities. The model uses an Eulerian-Lagrangian formulation for the gas and the liquid phase, respectively. Detailed models for droplet heating and vaporization in a convective flow field are employed, and detailed gas phase reactions are accounted for through use of a flamelet model for turbulent spray combustion. The results show a very good agreement between experimental and computational spray characteristics. The computed gas phase temperature lies above the experimental values which is associated with CARS single shot measurements and incomplete data for the initial conditions of the combustion process.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2001
- Accession Number
- ADP012361
Entities
People
- E. Gutheil
Organizations
- Heidelberg University