Transcript Grecia_Poster_UNO_LSU_ Simulocean

G. A. Teran, T. T. Gurung, S. Amini, J. F. Pereira and J.A. McCorquodale
University of New Orleans, 2000 Lakeshore Drive, CERM building, Suite 318, New Orleans, LA 70148, U.S.A.
ABSTRACT
This poster presents a demonstration of the use of the interface SIMULOCEAN to conduct an experiment of hurricane surge propagation in the Lower Mississippi River. Hurricane Isaac is being used to demonstrate that SIMULOCEAN system permits collaborators to
submit simulations, share outputs and ultimately transfer of model boundary conditions from one model to another. The University of New Orleans River surge model was previously calibrated using Hurricane Gustav. Delft 3-D was submitted through SIMULOCEAN with
boundary conditions based on LSU Gulf Surge Simulation and based on field data. HEC-RAS has been used to obtain upstream flow boundary conditions and as a check on the Delft 3-D surge simulation.
1. PROBLEM STATEMENT/GOAL
Hurricane surge propagation can be assessed by using the
SIMULOCEAN interface.
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Collaboration is accomplished in order to transfer and share
useful modeling information.
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2. METHODOLOGY
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PRE-PROCESSING: Some files were prepared using the Delft3D GUI, some others were prepared externally
PROCESSING: Computational runs were performed through SIMULOCEAN by uploading essential files to the interface
POST-PROCESSING: Result were extracted and visualized through the Delft3D GUI
Important files to submit a Delft3D job on SIMULOCEAN:
.mdf*, .grd*, .enc*, .dep*, .bnd*, .bct*, .obs*, .crs*, .rgh*
DELFT3D MODEL SETUP:
 Modeling Domain: Bonnet Carré (RM 127) – Head of Passes (RM 0)
 Simulations period: From 08/27/2012 to 09/01/2012
 Upstream Boundary Conditions: Discharge at Bonnet Carré obtained from HEC-RAS UNO model
 Downstream Boundary Conditions: Case 1: Stage from LSU model, case 2: Stage from HEC-RAS
UNO model
 Time step: 0.4minutes
 Roughness: Variable Manning’s n ranging from 0.02 to 0.03
 Grid resolution: About 100mx100m. Main Channel has 9 cells across with widths of about
1000m in average
 Bathymetry: Variable depth from 10m to 25m.. Most outlets about 10m depth
Figure 1. Diagram of Interaction with Collaborators through SIMULOCEAN
3. RESULTS
Figure 2. Modeling Domain (Visible Earth, 2001)
RM 127
Figure 4. U/S Boundary Conditions
Figure 7. HEC-RAS and Delft3D Results compared to Measured Data
Figure 3. Grid Overview
RM 0
Figure 8. HEC-RAS and Delft3D Results compared to Measured Data
4. CONCLUSION AND COMMENTS
REFERENCES
The use of the SIMULOCEAN interface to assess hurricane surge propagation
for Hurricane Isaac was successfully accomplished.
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Figure 5. D/S Boundary Conditions
Collaboration is a valuable tool for the modeling community, being this work a
demonstration of that.
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Deltares, 2011, Delft3D-FLOW User Manual, Simulation of multi-dimensional hydrodynamic Flows and
Transport Phenomena, including sediments
Thu, V., 2003, Storm Surge Modeling for Vietnam’s Coast, International Institute for Infrastructural,
Hydraulic and Environmental Engineering, Master of Science Thesis
Visible Earth: Mississippi River Sediment Plume, 2001, Visible Earth: Home. Available at
http://visibleearth.nasa.gov/view_rec.php?id=1650
Ye, J., McCorquodale, J., 1997, Depth-Averaged Hydrodynamic Model in Curvilinear Collocated Grid,
Journal of Hydraulic Engineering
Future work approaches the nesting of models through the SIMULOCEAN
interface.
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Figure 6. Outflow Boundary Conditions
ACKNOWLEDGEMENTS
Dr. Jim Chen, Dr. Kelin Hu and Dr. Jian Tao (NG-CHC, LSU)
Dr. Ioannis Georgiou, Dr. John Lopez, Dr. Mead Allison. Dr. Ehab Meselhe (NG-CHC, The
Water Institute of the Gulf).
The financial support of the National Science Foundation (NSF) is acknowledged.
Post-processing tools will be enable to perform the complete simulation
process through the SIMULOCEAN interface.
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G. A. Teran
T. T. Gurung
[email protected]
[email protected]
S. Amini
[email protected]
J.A. McCorquodale
[email protected]
J. F. Pereira
[email protected]
University of New Orleans. CI Strategy 2: Community modeling framework.
Mississippi River Model (River Model)