marine highway freight system modeling effort update
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Marine Highway Freight System Modeling Effort Update

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Marine Highway Freight System Modeling Effort Update. CSC Advanced Marine 15 June 2010. Objective. Provide Model for evaluating potential Marine Highway Routes Key Features Reusable “Toolset” for others w/o programming experience Relative comparison with Trucking Routes

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Presentation Transcript
  • Provide Model for evaluating potential Marine Highway Routes
  • Key Features
    • Reusable “Toolset” for others w/o programming experience
    • Relative comparison with Trucking Routes
    • Able to model ship operator’s process or track cargo unit to final destination
    • Primary metrics: time, throughput, & cost
    • Secondary metrics: fuel consumption, pollutant output
  • Model Framework
  • Inputs & Outputs
  • Model Architecture
  • Basic Example
model framework
Model Framework
  • Model will be created in ExtendSim 7 Discrete Event Modeling software
    • Uses Hierarchical Blocks - designed for “toolset” implementation
    • Readily imports data from Excel – simplifies data input for user
  • Models feasibility of marine highway route over extended time period
  • Basic Framework is three block types:
    • Creation block
    • Travel block
    • Port (cargo transfer) block
  • Data Inputs
    • Specific to block type
    • User defined data
    • Supports Monte Carlo simulation – captures real world variability
input output capabilities
Input & Output Capabilities
  • Input:
    • Cargo time distribution at departure port
    • Ship departure schedule
    • Port specific ship loading/unloading times
    • Ship capacity and performance characteristics
    • Ship route specifics
    • Truck and route characteristics
  • Output:
    • Cargo time distribution at destination
    • Ship fuel consumption
    • Delays at each stage
    • Emissions Tracking
    • Cost Tracking
block development
Block Development
  • Depending on complexity of process and available data, modeling fidelity can be varied by selecting interchangeable blocks
creation block
Creation Block
  • Creates cargo/truck items
    • Specifies distribution of when blocks arrive at port or distribution center
    • Specifies truck performance characteristics
  • Creates ship items
    • Specifies ship performance characteristics
travel block
Travel Block
  • Calculates the time delay of traveling ship or truck
  • Basic block will calculate time delay based on speed ÷ distance
  • Intermediate block will use speed limits
  • Advanced block will be route specific and will use GMU or Rutgers defined time delays based on time of day
port block
Port Block
  • Simulates marrying of ships with cargo
  • Basic block accommodates varying number of ship loading and cargo staging areas
  • Intermediate block will increase cargo loading fidelity
  • Advanced block will model the exact process and time delays of a specific port
  • Will accommodate logic for both RoRo and LoLo
  • Will function as an intermediate port
des example layout
DES Example Layout
  • Models route from General Foam Plastics in Portsmouth, VA to a Costco distribution center in Jamesburg, NJ.
  • Framework Development On Track
  • Implementation of Metrics going well
    • Desire feedback on selection of primary & secondary metrics
  • Data collection contingent on guidance from advisory board and participation of industry partners