Resonance line broadening of alkali metals in pyrotechnic flames. Doctoral thesis

Technical Report · Fri Apr 15 00:00:00 EST 1983

OSTI ID:5250494

Dillehay, D R

A mathematical model of a pyrotechnic flame has been developed and validated. The model utilizes a computer program to calculate the relative radiant power of flares containing any of the alkali metals. The computation takes into consideration known system variables such as formulation, candle size, displacement along the plume axis, and atmospheric pressure. These effects were evaluated over a wide range of conditions and the computed spectra follow the established experimental spectra trends. The computer solution is a general solution requiring no ad hoc modifications to the model for any of the metals or conditions tested. The basis for the model of the flame permits calculation of the effects of mixing of the flare plume with the ambient atmosphere and takes heat loss along the plume axis into consideration.

• Research Organization: Longhorn Army Ammunition Plant, Marshall, TX (USA)
• OSTI ID: 5250494
• Report Number(s): AD-A-135685/6
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALKALI METALS
EMISSION SPECTRA
FLAMES
MATHEMATICAL MODELS
CESIUM
COMBUSTION
DOPPLER EFFECT
HEAT LOSSES
LITHIUM
MIXING
PLUMES
POTASSIUM
QUENCHING
RESONANCE
RUBIDIUM
SODIUM
THERMODYNAMIC PROPERTIES
CHEMICAL REACTIONS
ELEMENTS
ENERGY LOSSES
LOSSES
METALS
OXIDATION
PHYSICAL PROPERTIES
SPECTRA
THERMOCHEMICAL PROCESSES
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry
400201 - Chemical & Physicochemical Properties