utilizing two dimensional hydraulic modeling on west ... · hec-ras 5.0 beta version o 2d...
TRANSCRIPT
![Page 1: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/1.jpg)
© 2014 HDR, Inc., all rights reserved.
Utilizing Two Dimensional Hydraulic Modeling on West Cathedral Channel
Deborah de Chambeau, P.E., CFM Yunjing Zhang, P.E., CFM Mitchell Blum, P.E., CFM Mark Seits, P.E., CFM
![Page 2: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/2.jpg)
Project Overview Project Location Project Purpose HEC-RAS 2D Capability HEC-RAS 2D Modeling o Geometry o Unsteady Flow o RAS Mapper o Model Results
![Page 3: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/3.jpg)
Project Location
![Page 4: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/4.jpg)
Study Area - Purpose
Study area Eagle Canyon Dam o Recently constructed upstream of the study area o CLOMR has been submitted in 2014
![Page 5: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/5.jpg)
Cove Development West Cathedral Channel North Cathedral Channel, East
Cathedral Channel Levees
![Page 6: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/6.jpg)
Project Purpose
Eagle Canyon Dam o Recently constructed upstream of the study area o Commercial Area to be remove from floodplain due
to North Cathedral Channel o Depth and duration of the flooding
Floodplain due to West Cathedral Channel o Zone AE within channel banks o Zone A outside of channel banks
![Page 7: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/7.jpg)
Project Description
West Berm o Not Certified Levee
East Levee Concrete Channel Downstream of Bridge 111 Model with and without Berm conditions
West Berm
Concrete Channel
Levee West Cathedral Channel
![Page 8: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/8.jpg)
Results – 1D
![Page 9: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/9.jpg)
Why 2D modeling
HEC-RAS 1 Dimensional Model Limitations Overland Flow Complex Hydrodynamic Flow Flow Breakout Flow Depth Model with and without Berm conditions
![Page 10: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/10.jpg)
HEC-RAS 2 D Model Capabilities HEC-RAS 5.0 Beta Version o 2D Capability
HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D
modeling o Solve Full Saint-Venant or Diffusion Wave
Equation o Unstructured or structured computational meshes o Detailed Hydraulic Table properties for 2D
computational cells and cell faces o Detailed flood mapping and flood animations
![Page 11: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/11.jpg)
Current HEC-RAS 2 D Model Limitations Can’t perform sediment transport erosion Can’t perform water quality modeling Can’t connect pump stations to 2D flow area
cells Can’t use the HEC-RAS bridge modeling
capacity
![Page 12: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/12.jpg)
Geometry Terrain 2D Flow Area
o 3 – 2D areas o Mesh – regular and Irregular size o Cell size 10x10 o Breaklines
![Page 13: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/13.jpg)
Geometry (Cont’d)
Boundary Condition o 2D – Area BC line o 2D - Normal Depth o 2D - Flow Hydrograph o 1D – Flow Hydrograph (Upstream) o 1D - Stage Hydrograph (Downstream)
![Page 14: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/14.jpg)
Geometry (Cont’d)
1D - Channel o Bridge
1D/2D Connection o Lateral Structures
![Page 15: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/15.jpg)
Land Cover to Manning’s n
1D area – Manning’s n o Channel, overbanks
2D Flow Area o Land Cover Name and Base Manning’s
n numbers were assigned o Associated layer
![Page 16: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/16.jpg)
Unsteady Flow Analysis
Geometry o With West Berm o Without West Berm
Unsteady Flow o 100 year 3 hour - controls o 100 year 6 hour o 100 year 24 hour o 10 year 3 hour o 50 year 3 hour
![Page 17: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/17.jpg)
RAS Mapper
![Page 18: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/18.jpg)
Results (without Berm) Results (with Berm)
100-year 3 hour
![Page 19: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/19.jpg)
Results (Max Depth, Velocity)
![Page 20: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/20.jpg)
Results (Water Surface El.)
![Page 21: Utilizing Two Dimensional Hydraulic Modeling on West ... · HEC-RAS 5.0 Beta Version o 2D Capability HEC-RAS 2D Modeling Capabilities o Can perform 1D, 2D and combined 1D and 2D modeling](https://reader030.vdocuments.us/reader030/viewer/2022040216/5f0b7d407e708231d430c590/html5/thumbnails/21.jpg)
Results – Animation