Debra R' Green

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Coastal Integrated Throughput Model
Debra R. Green Computer Specialist US Army
ERDC Coastal Hydraulics Laboratory
Debra R. Green Computer Specialist US Army
ERDC Coastal Hydraulics Laboratory
2

• Features of CITM
• FORTRAN CODE
• PC Based
• Uses data from JLOTS III 91-93 Operations
• Data base can be updated during actual
  operations
• Allows re-positioning of ships and offload sites
• Incorporates CODES input
• 1 minute time intervals
• Cumulative/recent throughput output
• Includes various environmental data

3
Operations Flow Diagram
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Approach and Moor
Approach and Moor
1
5
Refueling and Maint.
8
6
2
Load
Unload
Transit
4
Cast-off and Clear
3
Cast-off and Clear
7
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PURPOSE

• Address current JLOTS simulation needs
• Measure of impact of JLOTS decisions on
• force projection
• Link via PORTSIM to existing
  flow models (FPM/AMP)
• Tool to evaluate emerging technology (options
  study)
• Identification of limiting factors to throughput
• Objective site selection

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• JLOTS is a system of systems
• Very complex
• Very nonlinear
• must account for bottlenecks/problems
• Extremely affected by environmental conditions
• sea state varies day-to-day and year-to-year
• tides and nearshore bars
• must connect to inland throughput capabilities
• Only an objective time-domain tool can provide
  accurate answers
• CITM provides correct framework for this tool

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JOINT DEVELOPMENT EFFORT
Argonne National Laboratory
MTMC-TEA
Coastal Hydraulics Laboratory
Geotechnical Laboratory
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CITM
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PORTSIM
PORTSIM
PORTSIM
ü
Answers The Following Deployment Centered
Questions

How long does it take a force to move through a
port (port unit
clearance profiles)?

What and where are the bottlenecks within a port?

What part of a port is needed based on the force
moving
through it?

Why are the forces not closed by the required
time and what
are current force locations/status within a port?

What is the measured impact of JLOTS on force
projection and
the DTS?


Due to resource constraints, MTMCTEA has delayed
its work on

the development of CITM.
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GRAPH THROUGHPUT
PORTSIM GRAPH THROUGHPUT
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Effect of Sea-State on Throughput
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Typical CITM Output Showing Prioritized Offload
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• CITM Version 2
• Will include effect of nearshore bars on bare
  beach discharge
• Will include beach clearance/beach preparation
  module
• Will include new lighter types
• Will include random effects
• Will include long term wave climate analysis
• WARSIM/COMBAT XXI developers are interested in
  modifying CITM to simulate Amphibious Assault
  Operations

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NEW CITM COMPONENTS
NEARSHORE BATHYMETRY COMPONENT CROSS-BEACH
COMPONENT
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Effect of Tide and Bathymetry on Lighter Bare
Beach Approach
FRF Profile Data
Elevation (m)
Cross-shore Distance (m)
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Effect of Tide and Bathymetry on Lighter Bare
Beach Approach
Lighter, Draft 3 ft
FRF Profile Data
Lighter, Draft 3 ft
Lighter, Draft 3 ft
Elevation (m)
Cross-shore Distance (m)
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Effect of Tide and Bathymetry on Lighter Bare
Beach Approach
Lighter, Draft 5 ft
FRF Profile Data
Lighter, Draft 5 ft
Lighter, Draft 5 ft
Elevation (m)
Cross-shore Distance (m)
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Effect of Tide and Bathymetry on Lighter Bare
Beach Approach
Lighter, Draft 3 ft
Lighter, Draft 3 ft
FRF Profile Data
Lighter, Draft 3 ft
Elevation (m)
Cross-shore Distance (m)
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Effect of Tide and Bathymetry on Lighter Bare
Beach Approach
Lighter, Draft 5 ft
Lighter, Draft 5 ft
FRF Profile Data
Lighter, Draft 5 ft
Elevation (m)
Cross-shore Distance (m)
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Effect of Tide and Nearshore Bars on Throughput
Time Available for Bare Beach Access
Min. Depth for successful CSP Bar Clearance
Water Surface Elevation (m NGVD)
Bar Crest
Time (hrs)
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Effect of Tide and Nearshore Bars on Throughput
RO/RO Operations for 3 days using CSPs
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CITM Tests of JLOTS System

• Wish to examine the sensitivity of the overall
  JLOTS System to variations in numbers/types of
  assets
• Wish to identify system bottlenecks

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LO/LO Operations Results Indicate that JLOTS is A
Balanced System
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RO/RO Operations Results indicate that Primary
Bottleneck is at the Ship
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Beach Clearance Module Purpose

• Simulate movement of cargo from beach site to an
  inland marshaling area during JLOTS operations
• Schedule equipment/vehicle use in unloading
  cargo from lighters through use of Container
  Transfer System vs.Operation Interoperability
  Matrix
• Simulate traffic control and identify vehicle
  limitations on road surfaces taking into account
  the following
• Road surface type
• Number of road lanes
• California Bearing Ratio
• Road Capacity (tons/hr)
• Maintenance threshhold
• Simulate cargo unloading at marshaling yard and
  placement of cargo into holding areas

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Update on Beach Clearance Module

• Preliminary Stand-alone Version has been
  completed
• Incorporation into CITM underway
• Testing for model robustness on sample data has
  been performed
• Module requires three input files
• Vehicle/Container Transfer System prototype
  characteristics
• Road network characteristics data with path
  nodes for CTS prototypes
• Marshalling Yard characteristics
• Module consists of extensive cargo movement
  output at specified update intervals

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Sample of Plotted Output from Beach Clearance
Module
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Sample of Output from Beach Clearance Module

CURRENT SIMULATION TIME
155.0 Minutes

Vehicle ID (Name) 9 (M1070/M1000/20FT)
Assigned To Site 3 Vehicle Speed
0.00 Current Vehicle State UNLOADING AT
MARSHALING YARD Marshal01 IN Area-A
X Y

------ ------ Current Location
2.00 2.00 Location Heading Toward
2.00 2.00 Site/Marshaling Yard
Location Heading To 2.00 2.00 Surface Type
Vehicle Is On ASPHALT
20-ft containers 40-ft containers RO/RO
----------------
---------------- ----- Site Load
294 199
10 Vehicle Load 2
0 Marshaling Yard Load 9
3 Marshaling Yard Vehicle Capacity
1 Vehicle ID (Name) in MY Waiting Queue Current
Vehicle at Site Load Time 0.0
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FY01 and Beyond

• Incorporate cross-beach module
• Expanded compatibility with input data
• CITM Ver. 2 is under development for FY 02
  completion

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QUESTION(S)?