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Coastal and Hydraulics Laboratory Fact Sheets
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Non-SI to SI Units of Measurement
INTRODUCTION - cgwave_man30009
INTRODUCTION (cont.) - cgwave_man30010
INTRODUCTION (cont.) - cgwave_man30011
INTRODUCTION (cont.) - cgwave_man30012
INTRODUCTION (cont.) - cgwave_man30013
BASIC EQUATIONS
BASIC EQUATIONS (cont.) - cgwave_man30015
BASIC EQUATIONS (cont.) - cgwave_man30016
BOUNDARY CONDITIONS - cgwave_man30017
BOUNDARY CONDITIONS (cont.)
Figure 1. Definition sketch of model domain
FINITE ELEMENT FORMULATION - cgwave_man30020
Fig. 2 Definition sketch
Fig. 3 A typical elemen
FINITE ELEMENT FORMULATION (cont.) - cgwave_man30023
FINITE ELEMENT FORMULATION (cont.) - cgwave_man30024
FINITE ELEMENT FORMULATION (cont.) - cgwave_man30025
FINITE ELEMENT FORMULATION (cont.) - cgwave_man30026
Figure 4. Boundary segments
FINITE ELEMENT FORMULATION (cont.) - cgwave_man30028
FINITE ELEMENT FORMULATION (cont.) - cgwave_man30029
FINITE ELEMENT FORMULATION (cont.) - cgwave_man30030
Figure 5. Definition sketch for line integrals along the open boundary Γ
FINITE ELEMENT FORMULATION (cont.) - cgwave_man30032
FINITE ELEMENT FORMULATION (cont.) - cgwave_man30033
Harbor Problems
Alternative Open Boundary Treatment
Alternative Open Boundary Treatment (cont.) - cgwave_man30036
Alternative Open Boundary Treatment (cont.) - cgwave_man30037
Alternative Open Boundary Treatment (cont.) - cgwave_man30038
Alternative Open Boundary Treatment (cont.) - cgwave_man30039
Alternative Open Boundary Treatment (cont.) - cgwave_man30040
Alternative Open Boundary Treatment (cont.) - cgwave_man30041
Alternative Open Boundary Treatment (cont.) - cgwave_man30042
Alternative Open Boundary Treatment (cont.) - cgwave_man30043
Alternative Open Boundary Treatment (cont.) - cgwave_man30044
Kinematic Parameters
Kinematic Parameters (cont.) - cgwave_man30046
Kinematic Parameters (cont.) - cgwave_man30047
Floating Docks
Figure 6. Definition sketch for floating structures
ITERATIVE CG SOLUTION METHOD
ITERATIVE CG SOLUTION METHOD (cont.) - cgwave_man30051
ITERATIVE CG SOLUTION METHOD (cont.) - cgwave_man30052
GENERATION OF FINITE-ELEMENT NETWORK
PROCEDURE FOR STAND-ALONE USAGE OF CGWAVE
File Descriptions
Raw Data Processing Program "resol"
Viewing XYZ Data and Selecting Open Boundary End Points
XYZ File Format
Program "resol"
Minimum Water Depth
Creation of Finite Element Grid
Geometry
Boundary Conditions - cgwave_man30063
Floating Structures
The General Information File (*.gen)
The General Information File (*.gen) (cont.)
Assembly of Input Information - Program "reform"
Assembly of Input Information - Program "reform" (cont.)
The Wave Model - Program "cgwave"
Program "trans"
Selected Output at Points/Lines/Rectangular Sub-regions
Input File Format
Input File Format (cont.)
Viewing Solutions in SMS
Viewing Solutions in SMS (cont.)
Instructions for CGWAVE Interface in SMS (MODE-2 Usage)
Creating the Background Scatter Set
Defining Domains
Assigning Reflection Coefficients
Creating a Mesh from Feature Objects
Running CGWAVE
EXAMPLES
Shoal on a Sloping Beach
Figure 7. Modeled domain of Berkhoff et al. (1982)
Figure 8. Wave height comparisons for a low resolution domain
Figure 9. Wave height comparisons for increasing domain resolutions
Figure 10. Wave height comparisons from linear and non-linear CGWAVE runs on a domain resolution of 15 points per wavelength
Irregular Wave Propagation Over a Shoal
Table 2. Model Input Data
Table 3. Directional Resolutions Used for Model Input
Irregular Wave Propagation Over a Shoal (cont.) - cgwave_man30091
Irregular Wave Propagation Over a Shoal (cont.) - cgwave_man30092
Figure 11. Model domain for wave propagation over an elliptic shoal
Figure 13. Wave height comparisons for M1 input condition
Figure 14. Wave height comparisons for M2 input condition
Figure 15. Estimated wave heights for B1 input spectrum, 20directional discretization
Figure 16. Wave height comparisons for B1 input condition, 4.14directional discretization
Figure 17. Wave height comparisons for N1 input condition, 4.14directional discretization
Rectangular Harbor - Resonance
Rectangular Harbor - Resonance (cont.)
Figure 18. Rectangular resonance harbor with semi-circular open boundary
Figure 19. Theoretical and numerical resonance curves for a fully reflecting rectangular harbor
Figure 20. Harbor response curves for various values of coastal reflection coefficient
Figure 21. Harbor response curves for various values of the friction factor
Circular Island
Figure 22. Cross section of island and shoal bathymetry
Ponce de Leon Inlet, FL
Figure 24. Phase diagram for normal incident direction, 15-second period wave condition
Figure 25. Estimated wave height diagram for normal incident direction, 15-second period wave condition
Figure 26. Comparison between laboratory data and CGWAVE wave height estimates along a transect
Barbers Point Harbor, HI
Figure 27. Wave phase diagram for normal incident direction, 100-second period wave condition
Figure 28. Estimated wave height diagram for normal incident direction, 100-second period wave condition
Onslo Bay, NC
Figure 29. Wave phase diagram for normal incident direction, 35-second period wave condition
Figure 30. Estimated wave height diagram for normal incident direction, 35-second period wave condition
References - cgwave_man30117
References (cont.) - cgwave_man30118
References (cont.) - cgwave_man30119
References (cont.) - cgwave_man30120
cgwave_man3
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