TECHNICAL PAPERS: Internal Combustion Engines

Engine Fuel Droplet High-Pressure Vaporization Modeling

[+] Author and Article Information
G.-S. Zhu, R. D. Reitz

Engine Research Center University of Wisconsin—Madison, 1500 Engineering Drive, Madison, WI 53706

J. Eng. Gas Turbines Power 123(2), 412-418 (Dec 06, 2000) (7 pages) doi:10.1115/1.1361058 History: Received July 11, 2000; Revised December 06, 2000
Copyright © 2001 by ASME
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Grahic Jump Location
Predictions of single-component n-butane-nitrogen, n-heptane-nitrogen, and n-decane-nitrogen vapor-liquid equilibrium systems using semicontinuous vapor-liquid equilibrium model, compared with corresponding experimental data of Knapp et al. 24
Grahic Jump Location
Phase-equilibrium in terms of pressure-temperature diagrams for (a) diesel-nitrogen system, diesel fuel with distribution parameters αL=18.5,βL=10.0, and γL=0.0, and for (b) gasoline-nitrogen system, gasoline fuel with parameters αL=5.7,βL=15.0, and γL=0.0. Solid lines: real fuels; Dashed lines: single-component fuels.
Grahic Jump Location
Critical mixing temperature versus critical mixing pressure for both diesel-nitrogen and gasoline-nitrogen vapor-liquid equilibrium systems. Typical homogenous charge gasoline and diesel engine operating conditions are shown in the cross-hatched regions.
Grahic Jump Location
Surface temperatures (upper) and area regression rates (lower) of droplets versus time at four different reduced pressures. Solid lines: diesel fuel. Dashed lines: single-component fuel.
Grahic Jump Location
Time histories of boiling temperature at reduced pressure of 0.1 and critical mixing temperature at reduced pressure of 3.0 for diesel droplet
Grahic Jump Location
Mass vaporization rate and vapor mole fraction at droplet surface versus time at reduced pressure of Pr=3. Solid lines: diesel fuel. Dashed lines: single-component fuel.
Grahic Jump Location
Mean molecular weight of diesel droplet and variance of diesel liquid phase distribution versus time at three different reduced pressures
Grahic Jump Location
Surface area regression rates of droplets versus time at three different reduced pressures. Solid lines: gasoline fuel. Dashed lines: single-component fuel.
Grahic Jump Location
Normalized lifetimes versus ambient pressure of droplets of diesel and gasoline and the single-component counterpart fuels. Solid lines: real fuels. Dashed lines: single-component fuels.




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