Water Mist Suppression of Propane-Air Frames: Interpretation of Experimental Results
Abstract
We report a modeling study to understand the observed suppression behavior of 14-, 30-, and 42-um-diameter water drops on propane-air non-premixed counterflow flames. The model employed is a hybrid Eulerian-Lagrangian formulation for treating the interaction of drops and counterfiow non-premixed flames. For treatment of the propane chemical kinetics, a skeletal model was developed with validation against experimental non-premixed counterfiow flame extinction conditions and low pressure flame structure data for both propane and methane flames, as well as indirection comparison to experimental methane-air burning velocity results. The degree of drop evaporation and resulting levels of water vapor in the incoming air stream were estimated for the experimental conditions. Comparison of the computational extinction strain rates with the reported experimental measurements shows good agreement in consideration of the degree of mist evaporation in the experimental air stream entering the flame. The current results explain the observed drop dependent suppression behavior in these flames.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 10, 2005
- Accession Number
- ADA431445
Entities
People
- Bradley A. Williams
- Harsha K. Chelliah
- James W. Fleming
Organizations
- United States Naval Research Laboratory