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TECHNICAL PAPERS: Emissions

A Nonequilibrium Turbulence Dissipation Correction and Its Influence on Pollution Predictions for DI Diesel Engines

[+] Author and Article Information
F. X. Tanner

Department of Mathematical Sciences, Michigan Technological University, Houghton, MI 49931-1295e-mail: tanner@mtu.edu

G.-S. Zhu

Detroit Diesel Corporation, 13400 W. Outer Drive, Detroit, MI 48239-4001e-mail: guangsheng.zhu@detroitdiesel.com

R. D. Reitz

Engine Research Center, University of Wisconsin-Madison, Madison, WI 53706-1572e-mail: reitz@engr.wisc.edu

J. Eng. Gas Turbines Power 125(2), 534-540 (Apr 29, 2003) (7 pages) doi:10.1115/1.1501917 History: Received May 01, 2001; Revised November 01, 2001; Online April 29, 2003
Copyright © 2003 by ASME
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References

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Figures

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Cross section at TDC of the experimental Lombardini engine showing the observation point A 5 mm below the cylinder head and 20 mm from the cylinder axis. The 6 mm piston bowl off-set is indicated by the cylinder axis (vertical line).
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Measured and computed integral and macro length scales at the observation point A
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Turbulence Reynolds number of the Lombardini for computations obtained with and without the dissipation correction
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Turbulence viscosity of the Caterpillar 3406 at high load and the Sulzer S20 at full load for computations obtained with and without the dissipation correction
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Cylinder temperature of the Caterpillar 3406 at high load and the Sulzer S20 at full load for computations obtained with and without the dissipation correction
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Nitric oxide of the Caterpillar 3406 at high load and the Sulzer S20 at full load for computations obtained with and without the dissipation correction
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Soot values of the Caterpillar 3406 at high load and the Sulzer S20 at full load for computations obtained with and without the dissipation correction
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Soot-NOx tradeoff of the Caterpillar 3406 at high load for various injection timings. The computational data have been obtained with and without the dissipation correction.
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Soot-NOx tradeoff of the Sulzer S20 at full load for various injection timings. The computational data have been obtained with and without the dissipation correction.
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Soot-NOx tradeoff of the Caterpillar 3406 at 25% load for various injection timings. The computational data have been obtained with and without the dissipation correction.
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Soot-NOx tradeoff of the Sulzer S20 for 100%, 75% and 50% load. The computational data have been obtained with and without the dissipation correction.

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