Turbulent fluctuations in the wakes of gasdynamic laser cusps

Journal Article · Wed Mar 01 04:00:00 EST 1978 · J. Energy; (United States)

DOI:https://doi.org/10.2514/3.47961· OSTI ID:6780543

Demetriades, A

Reacting mixtures of flowing gases are at the heart of many modern high-power laser devices. Shear layers and wakes that separate coflowing streams in such devices present possibilities of energy density and optical distortions in the laser beams. The difficult task of assessing these fluctuations can be greatly eased if they can be predicted, at least for the case where chemical reactions are absent. A description is given of the gas density fluctuations in the wakes of nozzle cusps as used in gasdynamic lasers for a wide range of exit Mach and Reynolds numbers, nozzle heat transfer, and gas properties such as specific heat ratio and Prandtl number.

• Research Organization: Ford Aerospace and Communications Corp., Newport Beach, CA
• OSTI ID: 6780543
• Journal Information: J. Energy; (United States), Journal Name: J. Energy; (United States) Vol. 2:2; ISSN JENED
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ENERGY TRANSFER
FLOW MODELS
FLUCTUATIONS
FLUID MECHANICS
GAS LASERS
HEAT TRANSFER
HYDRODYNAMICS
LASERS
MACH NUMBER
MATHEMATICAL MODELS
MECHANICS
NOZZLES
PRANDTL NUMBER
REYNOLDS NUMBER
TURBULENCE
VARIATIONS
VELOCITY