Shear Flow Control of Gas Jets in Liquids
Abstract
Passive control of shear flow is used to control the rate of mixing and stability of submerged gaseous jets in liquids. The object is to evaluate the effectiveness of recently developed shear flow control techniques for application to gaseous jets injected into liquids and ultimately to apply these techniques to gaseous oxidants injected into liquid metal fuels. These control techniques have been initially tested in nonreacting gas/liquid systems. A large increase in degree of mixing and jet stability occurs when non-axisymmetric nozzles are used as injectors relative to injection by axisymmetric Fanno tube type nozzles. Jet volume spreading rate is increased by a factor of 4. A characteristic instability (the 'reverse shock' or reverse flow effect) occurring in such two-phase systems is greatly reduced by passive control of the shear flow. A simple passive technique of controlling entrainment is described which is effective in eliminating the reverse flow effect. The relevance of these control techniques to liquid metal combustion is discussed. Flow visualization, Modeling, Combustion, Control/CLMC, Passive control, Liquid metal combustion
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1993
- Accession Number
- ADA264673
Entities
People
- E. W. Hendricks
- L. A. Parnell
- T. G. Ogden
- W. M. Schieber
Organizations
- Naval Command, Control and Ocean Surveillance Center