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TECHNICAL PAPERS: Internal Combustion Engines: Flow, heat transfer, and combustion

In-Cylinder Tumble Flow Field Measurements and Predictions

[+] Author and Article Information
C.-W. Hong, S.-D. Tarng

Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan

J. Eng. Gas Turbines Power 123(1), 139-145 (Jul 27, 1999) (7 pages) doi:10.1115/1.1335479 History: Received April 26, 1999; Revised July 27, 1999
Copyright © 2001 by ASME
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References

Figures

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LDV measurement locations (11 horizontal planes, 9 points per plane, 99 in total)
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LDV measurements of the tumble flow in (a) the XZ plane and (b) the YZ plane
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LDV measurements of the non-swirl flow in XY planes (H stands for height beneath the TDC)
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Computational grids at BDC of the port-valve-liner assembly with dome-shaped combustion chamber and two canted valve seats
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Computed velocity vector diagrams in (a) the XZ plane and (b) the YZ plane
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Computed velocity vector diagrams in XY planes, which are located at 10 mm, 20 mm, 40 mm, and 60 mm beneath TDC, respectively
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Comparison of simulation and experimental results represented by streamlines on the XZ plane (the rectangle enclosed by dashed lines is the measurement area)
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Comparison of simulation and experimental results represented by streamlines on the YZ plane (the rectangle enclosed by dashed lines is the measurement area)
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Comparison of simulation and experimental velocities on the XY planes
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Comparison of simulation and experimental results of turbulence kinetic energy represented by contour diagrams
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Comparison of simulation and experimental results of mean speed and turbulence intensity at different locations in Z axis
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Comparison of simulation and experimental tumble ratio, swirl ratio and RMS of circulations. Simulation (I) means calculation from the measurement area, while simulation (II) stands for the calculation from the whole area of the liner cross section.

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