Johnathan Bolton, Anpeng He, Ning Zhang (Ph.D.) Department of Engineering McNeese State University ULS Academic Summit April 12-13, 2013 DISCHARGE SOURCE.

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Presentation transcript:

Johnathan Bolton, Anpeng He, Ning Zhang (Ph.D.) Department of Engineering McNeese State University ULS Academic Summit April 12-13, 2013 DISCHARGE SOURCE CHARACTERISTICS OF CALCASIEU SHIP CHANNEL CONFINED DISPOSAL FACILITIES 1

2

3 Dredging Operation

PROBLEM DESCRIPTION 4

SEDIMENT CONCENTRATION CONTOURS Case 1: No Lake CurrentCase 2: 1.0 m/s Lake Current 5

6

NEAR-FIELD SEDIMENT CONCENTRATION Case 1: No Lake Current 7

NEAR-FIELD SEDIMENT CONCENTRATION Case 1: No Lake Current G/ml m 8

NEAR-FIELD SEDIMENT CONCENTRATION Case 2: 1.0 m/s Lake Current 9 m

NEAR-FIELD SEDIMENT CONCENTRATION Case 2: 1.0 m/s Lake Current Bottom SurfaceMiddle Surface Top Surface 10

NEAR-FIELD SEDIMENT CONCENTRATION Case 2: 1.0 m/s Lake Current 11 m

NEAR-FIELD SEDIMENT CONCENTRATION Case 2: 1.0 m/s Lake Current Bottom SurfaceMiddle Surface Top Surface 12

FAR-FIELD SEDIMENT CONCENTRATION G/ml m 13

CONCLUSIONS Sediment concentrations in the near-field region for the two cases were investigated using computational fluid dynamics methods. Additional knowledge of fluid dynamics allowed for the creation of a solution model for far-field sediment concentrations. The additional current flow resulted in a significant effect on the sediment concentration. The concentration was decreased in the discharge direction in the open water, as the sediment was carried downstream by the current flow. 14

ACKNOWLEDGMENTS The authors would like to thank the U.S. Army Corps of Engineers New Orleans District for the financial support and technical advice for this project. 15

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