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TECHNICAL PAPERS

Characteristic and Computational Fluid Dynamics Modeling of High-Pressure Gas Jet Injection

[+] Author and Article Information
Y. Li, A. Kirkpatrick, C. Mitchell, B. Willson

Engines and Energy Conversion Laboratory, Mechanical Engineering Department, Colorado State University, Fort Collins, CO 80523

J. Eng. Gas Turbines Power 126(1), 192-197 (Mar 02, 2004) (6 pages) doi:10.1115/1.1635398 History: Received April 01, 2002; Revised December 01, 2002; Online March 02, 2004
Copyright © 2004 by ASME
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References

Pai, S. H., 1954, Fluid Dynamics of Jets, D. Van Nostrand Co., New York.
Adamson,  T. C., and Nicholls,  J. A., 1959, “On the Structure of Jets From Highly Underexpanded Nozzles Into Still Air,” J. Aerosp. Sci., 26, pp. 16–24.
Owen, P., and Thornhill, C., 1952, “The Flow in an Axially-Symmetric Supersonic Jet From a Nearly Sonic Orifice Into a Vacuum,” Brit. A. R. C. Technical Report, R and M 2616.
Love, E., Grigsby, C., Lee, L., and Woodling, M., 1959, “Experimental and Theoretical Studies of Axisymmetric Free Jets,” NASA Technical Report R-6.
Mather, D., and Reitz, R., 2000, “Modeling the Effects of Auxiliary Gas Injection on Diesel Engine Combustion and Emissions,” SAE Paper 2000-01-0657.
Gribben,  B., Badcock,  K., and Richards,  B., 2000, “Numerical Study of Shock-Reflection Hysteresis in an Underexpanded Jet,” AIAA J., 38(2), pp. 275–283.
Cumber,  P., Fairweather,  M., Falle,  S., and Giddings,  J., 1995, “Predictions of the Structure of Turbulent Highly Underexpanded Jets,” ASME J. Fluids Eng., 117, pp. 599–604.
Hsu,  A., and Liou,  M., 1991, “Computational Analysis of Underexpanded Jets in the Hypersonic Regime,” J. Propul. Power, 7(2), pp. 297–299.
Laney, C., 1998, Computational Gasdynamics, Cambridge University Press, New York.
Ferguson, C., and Kirkpatrick, A., 2001, Internal Combustion Engines: Applied Thermosciences, John Wiley and Sons, New York.
FLUENT, 2001, Fluent Incorporated, Hanover, NH.
Abraham,  J., 1997, “What is Adequate Resolution in the Numerical Computations of Transient Jets?,” SAE Trans., 106, pp. 141–151.
Post,  S., Iyer,  V., and Abraham,  J., 2000, “A Study of the Near-Field Entrainment in Gas Jets and Sprays Under Diesel Conditions,” ASME J. Fluids Eng., 122, pp. 385–395.
Shapiro, A., 1953, The Dynamics and Thermodynamics of Compressible Fluid Flow, Vol. 1, John Wiley and Sons, New York.
Chang,  I., and Chow,  W., 1974, “Mach Disk From Underexpanded Axisymmetric Nozzle Flow,” AIAA J., 12(8), pp. 1079–1082.

Figures

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Supersonic flow from a simple orifice at low pressure ratios (Pai 1)
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Supersonic flow from a simple diverging orifice at high pressure ratios (Adamson and Nicholls 2
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Characteristic net and jet boundary for pressure ratio of 81.4:1
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Close up of computational grid near the orifice outlet
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Comparison of two-dimensional jet velocity contours (m/s) of for pressure ratio of 35:0.43
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Two-dimensional centerline velocity profile in axial direction
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Two-dimensional jet centerline pressure in axial direction
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Two-dimensional jet velocity profile in transverse direction at two axial locations
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Velocity contours at the three higher pressure ratios
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Effect of overall pressure ratio on the local nondimensional pressure profile along jet centerline
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Effect of overall pressure ratio on the Mach number profile along jet centerline
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Effect of pressure ratio on location of Mach disk
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Comparison of viscous effects on centerline pressure profile (pressure ratio=81.4:1)
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Velocity contours for 3:1 pressure ratio
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Centerline velocity oscillation and decay for 3:1 pressure ratio
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Centerline static pressure oscillation and decay for 3:1 pressure ratio

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