Atomization in Gas-Centered Swirl-Coaxial Injectors
Abstract
A preliminary study of atomization mechanisms in gas-centered swirl-coaxial injectors for use in rocket engines has been undertaken. Gas-centered swirl-coaxial injectors differ from other injectors in that atomization occurs from a wall-bounded liquid. Few studies of atomization mechanisms in wall-bounded flows exist; some probable atomization processes have been determined, however. These mechanisms include liquid turbulence, aerodynamic stripping and a process driven by gas-phase structures. The likely character of the gas and film undergoing these atomization processes is presented. Relevant nondimensional groupings based on simplified theoretical descriptions of select mechanisms are outlined. Preliminary experimental and numerical results taken at atmospheric pressure are qualitatively compared to the likely mechanisms and each other.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 08, 2006
- Accession Number
- ADA456891
Entities
People
- Douglas G. Talley
- M. D. Lightfoot
- Stephen A. Danczyk
Organizations
- Air Force Research Laboratory