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{{DISPLAYTITLE:CMS-Flow Rubble Mound Structures (DRAFT)}}
{{DISPLAYTITLE:CMS-Flow Rubble Mound Structures}}
{{TOC right}}
= Introduction =  
= Introduction =  
Rubble mounds are commonly utilized in the construction of breakwaters, jetties, revetments, and groins. These structures play an essential role in harbor protection, channel navigation, shoreline defense, and in managing flow, sediment movement, and wave energy mitigation. Figure 1 illustrates the implementation of a rubble mound breakwater. Given their significant impact on hydrodynamic behavior and sediment dynamics in coastal areas, it is critical for the CMS to accurately simulate the influence of rubble mound structures.
Rubble mounds are commonly utilized in the construction of breakwaters, jetties, revetments, and groins. These structures play an essential role in harbor protection, channel navigation, shoreline defense, and in managing flow, sediment movement, and wave energy mitigation. Figure 1 illustrates the implementation of a rubble mound breakwater. Given their significant impact on hydrodynamic behavior and sediment dynamics in coastal areas, it is critical for the CMS to accurately simulate the influence of rubble mound structures.
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|+ List of rubble mound structure parameters
|+ List of rubble mound structure parameters
|-
|-
| Cell IDs || || No dialog 
| Cell IDs || No dialog  
|-
|-
| Name || User-entry || Dialog
| Name || Dialog
|-
|-
| Rock Diameter || Dataset or Constant || Dialog
| Rock Diameter || Dialog
|-
|-
| Porosity || Dataset or Constant || Dialog
| Porosity || Dialog
|-
|-
| Base Depth || Dataset or Constant || Dialog
| Base Depth || Dialog
|-
|-
| Computation method || Choice of three options  || Dialog
| Computation method || Dialog
|}
|}


SMS will handle the assignment of the appropriate values for Cell IDs.
SMS will handle the assignment of the appropriate values for Cell IDs.


== CMS-Flow specific information ==
== CMS-Flow specific information for SMS 13.4+ ==
The parameters/selections for each Culvert feature arc will be exported to the ‘.cmcards’ file in the form of a block of values.  This implementation has been confirmed to work with CMS 5.3.12 and later.
The parameters/selections for each Rubble Mound structure polygon will be exported to the ‘.cmcards’ file in the form of a block of values.  This implementation has been confirmed to work with CMS 5.3.12 and later.


* The Culvert parameter cards needed for each culvert are added to a structure block with a corresponding BEGIN/END statement for each culvert are listed in the table below.  
* Before each rubble mound structure is exported to the .cmcards file, one line defining the ID dataset is written.  These IDs contain a zero for cells not associated with a rubble mound, otherwise an integer (i.e., 1, 2, or 3) which defines the order of the rubble mound blocks written in the parameter file.
* Most cards take one parameter, others take two. This is defined in column 3.
* The Rubble Mound parameter cards needed for each structure are added to a block with a corresponding BEGIN/END statement for each rubble mound are listed in the table below.
* Cards that are dependent on other choices are indicated in column 5.
* Constant cards take one parameter, Dataset cards take two. This is defined in column 3.
* In cases where multiple values are to be written for a card, the value corresponding to the Bayside should be written first followed by the Seaside value.
* For readability and to be consistent with other cards in the .cmcards file, all values should start in column 36 and 3 spaces written between each value per line if more than one.
* For readability and to be consistent with other cards in the .cmcards file, all values should start in column 36 and 3 spaces written between each value per line if more than one.


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!Type of value
!Type of value
written
written
!Dependent on
!Notes 
|-
|-
|CULVERT_V2_BEGIN ||NO ||0 ||N/A || ||
|RUBBLE_MOUND_ID_DATASET
|NO
|2
|<nowiki><H5 file>  <H5 path> </nowiki>
|-
|-
|  CELLS ||YES ||2 ||<int>  <int> || ||Bay, then Sea
|RUBBLE_MOUND_BEGIN ||NO ||0 ||N/A
|-
|-
|  TYPE ||YES ||1 ||‘CIRCLE’ or  ‘BOX’ || ||
|  NAME ||YES ||1 ||<string>
|-
|-
|  FLAP_GATE ||YES ||1 ||‘ON’ or ‘OFF’ || ||
|  ROCK_DIAMETER_CONSTANT ||YES ||1 ||<real>
|-
|-
|  RADIUS ||YES ||1 ||<real> ||TYPE ==  ‘CIRCLE’ ||
|STRUCTURE_POROSITY_CONSTANT ||YES ||1 ||<real>  
|-
|-
|  WIDTH ||YES ||1 ||<real> ||TYPE == ‘BOX’ ||
|  STRUCTURE_BASE_DEPTH_CONSTANT ||YES ||1 ||<real>  
|-
|-
|  HEIGHT ||YES ||1 ||<real> ||TYPE == ‘BOX’ ||
|  ROCK_DIAMETER_DATASET ||YES ||2 ||<nowiki><H5 file>  <H5 path></nowiki>  
|-
|-
|  LENGTH ||YES ||1 ||<real> || ||
|  STRUCTURE_POROSITY_DATASET ||YES ||2 ||<nowiki><H5 file>  <H5 path></nowiki>  
|-
|-
|  DARCY_FRICTION_FACTOR ||YES ||1 ||<real> || ||
|  STRUCTURE_BASE_DEPTH_DATASET ||YES ||2 ||<nowiki><H5 file>  <H5 path></nowiki>  
|-
|-
|  MANNINGS_COEFFICIENT ||YES ||1 ||<real> || ||
|  FORCHHEIMER_COEFF_METHOD ||YES ||1 ||<int>  
|-
|-
|  INVERT_ELEVATIONS ||YES ||2 ||<real>  <real> || ||Bay, then Sea
|RUBBLE_MOUND_END ||NO ||0 ||N/A  
|-
|  ENTRY_HEAD_LOSS_BAY ||YES ||1 ||<real> || ||
|-
|  ENTRY_HEAD_LOSS_SEA ||YES ||1 ||<real> || ||
|-
|  EXIT_HEAD_LOSS_BAY ||YES ||1 ||<real> || ||
|-
|  EXIT_HEAD_LOSS_SEA ||YES ||1 ||<real> || ||
|-
|  OUTFLOW_ANGLES ||YES ||2 ||<real>  <real> || ||Bay, then Sea
|-
|CULVERT_V2_END ||NO ||0 ||N/A || ||
|}
|}
An example culvert block is shown below:
An example rubble mound implementation with two rubble mounds using a combination of datasets and constants is shown below. Line comments are preceded by a '!'.
<pre>
<pre>
CULVERT_V2_BEGIN
RUBBLE_MOUND_ID_DATASET              "dana_pt_updated_RM.h5"  "/Datasets/ID"
  CELLS                             14334   14348
RUBBLE_MOUND_BEGIN
   TYPE                              CIRCLE
   NAME                              'South Breakwater'
   FLAP_GATE                         OFF
   ROCK_DIAMETER_CONSTANT            1.5
   RADIUS                            0.9
   STRUCTURE_POROSITY_CONSTANT        0.4
   LENGTH                            30.3
   STRUCTURE_BASE_DEPTH_CONSTANT      2
   DARCY_FRICTION_FACTOR             0.04
   FORCHHEIMER_COEFF_METHOD          1    !Sidiropoulou et al. (2007)
  MANNINGS_COEFFICIENT              0.03
RUBBLE_MOUND_END
   INVERT_ELEVATIONS                 -1   -1
RUBBLE_MOUND_BEGIN
   ENTRY_HEAD_LOSS_BAY               0.4   0.4
   NAME                              'East Breakwater'
   ENTRY_HEAD_LOSS_SEA               0.4   0.4
   ROCK_DIAMETER_DATASET              "dana_pt_updated_RM.h5"  "/Datasets/ROCK_D"
   EXIT_HEAD_LOSS_BAY                0.6   0.6
   STRUCTURE_POROSITY_DATASET        "dana_pt_updated_RM.h5"  "/Datasets/POROSITY"
   EXIT_HEAD_LOSS_SEA                0.6   0.6
   STRUCTURE_BASE_DEPTH_DATASET      "dana_pt_updated_RM.h5"   "/Datasets/BASE_D"
   OUTFLOW_ANGLES                    180.0   0.0
   FORCHHEIMER_COEFF_METHOD          1    !Sidiropoulou et al. (2007)
CULVERT_V2_END  
RUBBLE_MOUND_END
</pre>
</pre>
Last update 9/25/2024<br>[[CMS-Flow/Structures |Back to CMS-Flow Structures page]]<br>[[CMS#Documentation Portal |Back to Documentation Portal]]






Last update 9/24/2024<br>
Last update 9/25/2024<br>[[CMS-Flow/Structures |Back to CMS-Flow Structures page]]<br>[[CMS#Documentation Portal |Back to Documentation Portal]]
[[CMS-Flow/Structures | Back to CMS-Flow Structures page]]<br>
[[CMS#Documentation Portal | Back to Documentation Portal]]

Latest revision as of 20:04, 26 September 2024


Introduction

Rubble mounds are commonly utilized in the construction of breakwaters, jetties, revetments, and groins. These structures play an essential role in harbor protection, channel navigation, shoreline defense, and in managing flow, sediment movement, and wave energy mitigation. Figure 1 illustrates the implementation of a rubble mound breakwater. Given their significant impact on hydrodynamic behavior and sediment dynamics in coastal areas, it is critical for the CMS to accurately simulate the influence of rubble mound structures.

Usage of Rubble Mounds for CMS in the SMS

Early SMS versions (< 13.0)

Previous documentation (Link given below) described the formulation and implementation of Rubble Mound structures in CMS, detailing input requirements for SMS versions up to 11.2. This implementation required hand-manipulation of the CMS-Flow parameter files to add in lists of cells and option values.

A technical note was started in 2024 for the newer implementation of Rubble Mounds. With the implementation of the other structures being imminent in SMS 13.4, the material for Rubble Mounds will be incorporated into a larger Special Report in FY25 that covers all four structures. The original method for implementing Rubble Mounds in CMS is covered by the technical note listed below.

Later SMS versions (13.0 to 13.3.8)

SMS 13.1 to 13.3 dialog for CMS-Flow model coverages.
SMS 13.1 to 13.3 dialog for CMS-Flow model coverages.

An undocumented update in SMS version 13.0 introduced a method to use constant values for cells enclosed within a polygon. There was no implementation of datasets to hold the parameter values in this version, however. This implementation created a "Rubble Mound Jetties" coverage that the user must populate and attach to the CMS-Flow simulations.

Recent SMS version (13.3.9+)

The rubble mound polygon dialog in SMS 13.3.9 and later was modified to allow for user-selection of either constant values or datasets for rock diameter, base depth, and porosity.

Future SMS versions (13.4.x)

SMS 13.4 CMS-Flow model coverages.
SMS 13.4 CMS-Flow model coverages.
  • The existing "Rubble Mound Jetties" coverage beneath the CMS-Flow model option in SMS 13.3 and earlier has been renamed "Rubble Mound (legacy)" in the new interface.
  • A new "Structures" coverage has been added beneath the CMS-Flow model option in SMS 13.4 and later. This one coverage will handle Rubble Mound structures as well as three new types: Culverts, Weirs, and Tide Gates.
    • In the new coverage, Rubble Mound structures will continue to be defined with polygons where each can have a set of attributes (either constant or from a dataset).
  • The "Structures" coverage will need to be applied to the CMS Simulation in order to export the appropriate cards to the parameter file.

Values needed by the CMS for each Rubble Mound polygon are listed in the table below. If there is a user-definable option in the dialog for the user to enter a value, the word 'Dialog' is shown in column 3, otherwise the words 'No dialog' are written in column 2.

List of rubble mound structure parameters
Cell IDs No dialog
Name Dialog
Rock Diameter Dialog
Porosity Dialog
Base Depth Dialog
Computation method Dialog

SMS will handle the assignment of the appropriate values for Cell IDs.

CMS-Flow specific information for SMS 13.4+

The parameters/selections for each Rubble Mound structure polygon will be exported to the ‘.cmcards’ file in the form of a block of values.  This implementation has been confirmed to work with CMS 5.3.12 and later.

  • Before each rubble mound structure is exported to the .cmcards file, one line defining the ID dataset is written. These IDs contain a zero for cells not associated with a rubble mound, otherwise an integer (i.e., 1, 2, or 3) which defines the order of the rubble mound blocks written in the parameter file.
  • The Rubble Mound parameter cards needed for each structure are added to a block with a corresponding BEGIN/END statement for each rubble mound are listed in the table below.
  • Constant cards take one parameter, Dataset cards take two. This is defined in column 3.
  • For readability and to be consistent with other cards in the .cmcards file, all values should start in column 36 and 3 spaces written between each value per line if more than one.
Cardname Indent 2

spaces?

Number

of vals

Type of value

written

RUBBLE_MOUND_ID_DATASET NO 2 <H5 file> <H5 path>
RUBBLE_MOUND_BEGIN NO 0 N/A
  NAME YES 1 <string>
  ROCK_DIAMETER_CONSTANT YES 1 <real>
STRUCTURE_POROSITY_CONSTANT YES 1 <real>
  STRUCTURE_BASE_DEPTH_CONSTANT YES 1 <real>
  ROCK_DIAMETER_DATASET YES 2 <H5 file> <H5 path>
  STRUCTURE_POROSITY_DATASET YES 2 <H5 file> <H5 path>
  STRUCTURE_BASE_DEPTH_DATASET YES 2 <H5 file> <H5 path>
  FORCHHEIMER_COEFF_METHOD YES 1 <int>
RUBBLE_MOUND_END NO 0 N/A

An example rubble mound implementation with two rubble mounds using a combination of datasets and constants is shown below. Line comments are preceded by a '!'. 

RUBBLE_MOUND_ID_DATASET              "dana_pt_updated_RM.h5"   "/Datasets/ID"
RUBBLE_MOUND_BEGIN
  NAME                               'South Breakwater'
  ROCK_DIAMETER_CONSTANT             1.5
  STRUCTURE_POROSITY_CONSTANT        0.4
  STRUCTURE_BASE_DEPTH_CONSTANT      2
  FORCHHEIMER_COEFF_METHOD           1     !Sidiropoulou et al. (2007)
RUBBLE_MOUND_END
RUBBLE_MOUND_BEGIN
  NAME                               'East Breakwater'
  ROCK_DIAMETER_DATASET              "dana_pt_updated_RM.h5"   "/Datasets/ROCK_D"
  STRUCTURE_POROSITY_DATASET         "dana_pt_updated_RM.h5"   "/Datasets/POROSITY"
  STRUCTURE_BASE_DEPTH_DATASET       "dana_pt_updated_RM.h5"   "/Datasets/BASE_D"
  FORCHHEIMER_COEFF_METHOD           1     !Sidiropoulou et al. (2007)
RUBBLE_MOUND_END


Last update 9/25/2024
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