Calculations of steady state droplet vaporization at high ambient pressures
Mathematical model of spherically symmetric quiescent droplet undergoing quasi-steady vaporization near thermodynamic critical point
Borman, G. L.↗
SEARCH · Engineering Papers
Results for “droplets”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Supercritical bipropellant droplet combustion
Fuel droplets burning at pressures sufficient to reach critical temperature under zero gravity conditions in free fall apparatus
Dominicis, D. P.↗
Scanning electron microscopy of BeO whiskers formed on the surface of burning beryllium droplets
BeO whiskers formation on burning Be droplets surface using scanning electron microscopy, noting temperature effects
Prentice, J. L.↗
Experiments on droplet vaporization at supercritical pressures
N-heptane and Freon-13 droplets vaporizing size and temperature at supercritical pressures in heated air stream
Borman, G. L.↗
Effect of water vapor on the combustion of flash-heated beryllium droplets
Oxide transport and water vapor effects on flash- heated beryllium droplet combustion
Prentice, J. L.↗
Stream-tube analysis used to calculate electron concentration in the presence of accelerating and evaporating water droplets
Determining electron concentration in flowing plasma in presence of accelerating and evaporating water droplets
Bushnell, D. M.↗
Water droplet size determination for breakup of large diameter jets
Wind tunnel photography for determining water droplet size in breakup of water jets
Source record↗
The investigation of critical pressure burning of fuel droplets Annual report, 1 Jan. - 31 Dec. 1970
Experimental and theoretical results of critical pressure burning of fuel droplets
Allison, C.↗
Mass diffusivity effects on droplets in film boiling
Analysis of film boiling data for water droplets vaporizing into air, argon, nitrogen, helium, and steam
Baumeister, K. J.↗
Bipropellant droplet combustion in the vicinity of the critical point
Bipropellant droplet supercritical steady combustion temperature measurements in zero gravity near critical point, comparing high and low pressures models for ambient gas solubility
Faeth, G. M.↗
Periodic oscillations observed when 365-micron diameter hafnium droplets burn in O2
Hafnium droplets burning in ultrapure oxygen at various pressures, considering combustion induced natural mode periodic oscillations
Cross, C. W., Jr.↗
A numerical study of collision efficiencies and coalescence parameters for droplet pairs with radii up to 300 microns
Droplet pairs collision efficiencies and coalescence parameters, computing flow fields from nonlinear time dependent Navier-Stokes equations
Gal-Chen, T.↗
Experimental burning rates of single laser- ignited beryllium droplets
Burning rates of single laser ignited beryllium droplets, considering particle size effect
Prentice, J. L.↗
Mass diffusivity effects on droplets in film boiling
Mass diffusivity effects in film boiling of water droplets vaporizing in air, Ar, N, He and steam
Baumeister, K. J.↗
Fuel droplet burning rates in a combustion gas environment
Fuel droplet burning rate variation with ambient temperature and oxygen concentration in combustion gas environment
Faeth, G. M.↗
N-heptane, carbon dioxide, and chlorotrifluoromethane droplet vaporization measurements at supercritical pressures
N-heptane, carbon dioxide and Freon 13 droplet vaporization measurements at supercritical pressure, comparing with film theory calculation
Borman, G. L.↗
Fuel droplet burning rates at high pressures
Combustion of methanol, ethanol, propanol -1, n - pentane, n - heptane and n - decane was observed in air under natural convection conditions at pressures up to 100 atm. The droplets were simulated by porous spheres with diameters in the range 0.63 - 1.90 cm. The pressure levels of the tests were high enough so that near critical combustion was observed for methanol and ethanol. Measurements were made of the burning rate and liquid surface temperatures of the fuels. The data were compared with variable property analysis of the combustion process, including a correction for natural convection. The burning rate predictions of the various theories were similar and in fair agreement with the data. The high pressure theory gave the best prediction for the liquid surface temperatures of ethanol and propanol -1 at high pressure. The experiments indicated the approach of critical burning conditions for methanol and ethanol at pressures on the order of 80 - 100 atm, which was in good agreement with the predictions of both the low and high pressure analysis.
Canada, G. S.↗
Droplet monitoring probe
A droplet monitoring system is disclosed for analysis of mixed-phase fluid flow in development of gas turbines. The system uses a probe comprising two electrical wires spaced a known distance apart and connected at one end to means for establishing a dc potential between the wires. A drop in the fluid stream momentarily contacting both wires simultaneously causes and electrical signal which is amplified, detected and counted.
Baughman, J. R.↗